Publications

Citation Indices 

               Google Scholar             Total Citations                      455

                                                       h -Index                                14

                                                        i10 - Index                                  17

               Research Gate               Total Citation                        386

                                                    Research Interest Score    1160.6

                                                        Reads                                        29611

                                                        Recommendations                 377

List of Publications

BOOK / BOOK-CONTRIBUTION PUBLISHED

  1. विशाल केशरी और मालतेश मैलार, निर्वात इलेक्ट्रानिकी एवं कार्यालय प्रशासन शब्दावली संकलन, सूक्ष्मतरंग नलिका अनुसंधान तथा विकास केन्द्र, रक्षा अनुसंधान तथा विकास संगठन, रक्षा मंत्रालय, भारत सरकार, बीईएल कांप्लेक्स, जालहल्ली, बेंगलूरु, जनवरी 2021 । [Vishal Kesari and Malatesh Mailar, Vacuum Electronics and Office Administration Vocabulary Compilation, Microwave Tube Research and Development Centre, Defence Research and Development Organisation, Ministry of Defence, Government of India, BEL Complex, Jalahalli, Bangalore, Jan. 2021. 

  2. विशाल केशरी, सूक्ष्मतरंग और मिलीमीटर-तरंग नि‍र्वात इलेक्ट्रॉनिक युक्तियां एवं सम्बंधित तथ्य, डी.आर.डी.ओ. विशेष प्रकाशन श्रृंखला, रक्षा विज्ञान सूचना एवं प्रलेखन केन्द्र (डेसीडाक), रक्षा अनुसंधान एवं वि‍कास संगठन (रक्षा मंत्रालय), नई दिल्ली द्वारा मुद्रण एवं प्रकाशन, जनवरी 2019। [Vishal Kesari, Microwave and Millimeter-wave Vacuum Electronic Devices and related Facts, DRDO Special Publication Series, Defence Scientific Information and Documentation Centre, Defence Research and Development Organisation (Ministry of Defence), New Delhi, Jan. 2019.]

  3. Vishal Kesari and B. N. Basu, High Power Microwave Tubes: Basics and Trends, Volume-1, IOP Concise Physics, Morgan & Claypool Publishers, London, 2018 (ISBN 978-1-6817-4561-9, https://iopscience.iop.org/book/978-1-6817-4561-9, published online by Jan 2018).

  4. Vishal Kesari and B. N. Basu, High Power Microwave Tubes: Basics and Trends, Volume-2, IOP Concise Physics, Morgan & Claypool Publishers, London, 2018 (ISBN 978-1-6817-4704-0, https://iopscience.iop.org/book/978-1-6817-4704-0, published online by Jan 2018.).

  5. Vishal Kesari, Analysis of Disc-loaded Circular Waveguides for Wideband Gyro-TWTs, LAP - Lambert Academic Publishing AG & Co., Koln (Cologne), Germany (ISBN: 978-3-8383-1145-6), 2009.

CHAPTER PUBLISHED

  1. Vishal Kesari, "Metal and dielectric loaded waveguide - An artificial material for tailoring the waveguide propagation characteristics" in Electromagnetic Materials, IntechOpen Limited, London, United Kingdom (Wales No. 11086078), Editor, Prof. Man-Gui Han, Jan 2019. 

  2. Vishal Kesari and R. Seshadri, "Magnetic Field Sensitivity in Depressed Collector for a Millimeter-Wave Gyrotron," Chapter 6, Book Title Recent Trends in Communication, Computing, and Electronics, Springer Nature Singapore Pte. Ltd., Singapore, 2019. (Accepted for publication Aug. 2018)

BOOK-CONTRIBUTION PUBLISHED

  1. Selected portions of doctoral thesis and one of research papers have been included as appendices in a book Technical Writing, Prentice-Hall of India Limited, New Delhi authored by B. N. Basu, 2008.
  2. DRDO Technology Focus: Microwave Power Modules and Compact Transmitters, June Issue, 2015.
  3. International Scenario in Core Area of work at MTRDC, SATRANGI, ECS Cluster Magazine, DRDO, p. 6, Oct. 2022 


COMPLIED CONFERENCE/ WEBINAR PROCEEDINGS/ SOUVENIR/ MAGAZINE

  1. राजभाषा गृह-पत्रि‍का – उमंग (गैर-तकनीकी), सूक्ष्‍मतरंग नलिका अनुसंधान तथा विकास केन्‍द्र, बेंगलूरु, भारत, अंक 18, 2023-24, मार्च 2024।
  2. राजभाषा गृह-पत्रि‍का – उमंग (तकनीकी), सूक्ष्‍मतरंग नलिका अनुसंधान तथा विकास केन्‍द्र, बेंगलूरु, भारत, अंक 18, 2023-24, मार्च 2024।
  3. Course material of Continuing Education Programme Course on Quality and Reliability of Electronic Systems, organised by Microwave Tubes Research and Development Centre, Bengaluru, India (Oct. 11-13, 2023).
  4. राजभाषा गृह-पत्रि‍का – उमंग, सूक्ष्‍मतरंग नलिका अनुसंधान तथा विकास केन्‍द्र, बेंगलूरु, भारत, अंक 17, 2022-23, मार्च 2023 ।
  5. स्मारिका, राजभाषा तकनीकी संगोष्‍ठी'उत्‍कर्ष – 2023',सूक्ष्मतरंग नलिका अनुसंधान तथा विकास केंद्र,बेंगलूरु,भारत (मार्च16 और17, 2023), पृष्ठ 1-355 । [Souvenir, Rajbhasha Technical Seminar 'Uatkarsh-2023', Microwave Tube Research and Development Centre, Bengaluru, India (Mar. 16 and 17, 2023), pp. 1-355.]
  6. Proceedings, 13th webinar on RF/Microwave to THz: Education for the Next Generation, 17 Oct. 2022. Jointly organized by INAE Expert Group on Advanced Microwave-Terahertz-wave Technology & Applications, India; CSIR - Central Electronics Engineering Research Institute, Pilani, India; Birla Institute of Technology and Science - Pilani, Hyderabad Campus, India; and Thinkers in Vacuum Electron Devices Group, India.
  7. Proceedings, 12th webinar on Plasma Science & Technology and Vacuum Electron Devices, 12 Jun. 2022. Organized by Institute of Plasma Research, Gandhinagar, India and Thinkers in Vacuum Electron Devices Group, India.
  8. Proceedings, 11th webinar on Gyrotron: Basics and Trends, 26 Mar. 2022. Organized by IEEE Students Branch of BC Roy College of Engineering, Durgapur, West Bengal, India and Thinkers in Vacuum Electron Devices Group, India.
  9. Proceedings, Tenth webinar on Metamaterials and Their Applications Encompassing Assistance in Microwave Tubes, 15 Jan. 2022. Organized by IEEE Students Branch of BC Roy College of Engineering, Durgapur, West Bengal, India and Thinkers in Vacuum Electron Devices Group, India.
  10. Proceedings, Two-day national symposium (online) on Indigenous Development of Simulation Tools for Vacuum Electronic Devices: Challenges and Opportunities, 27 and 28 Nov. 2021. Organised by IEEE Rajasthan Subsection, India and Thinkers in Vacuum Electron Devices Group, India (9th Webinar).
  11. Proceedings, 8th Webinar, Expert Talk (Gyrotrons and Gyro-Amplifiers: Natural Sources of High-Power, High-Order, Orbital-Angular-Momentum Millimeter-Wave Beams), 4 Sep. 2021, Thinkers in Vacuum Electron Devices Group, India.
  12. Proceedings, Seventh Webinar on Challenges in Manufacturing Vacuum Electronic Devices and Components, 10 Jul. 2021, Thinkers in Vacuum Electron Devices Group, India.
  13. Proceedings, Sixth Webinar, Expert Talk (Review of HPM Devices Encompassing Relativistic BWO) & Young Researchers' Talk Series (Analysis of Pseudo-spark Discharge Based Plasma Cathode Electron Source), 8 May 2021, Thinkers in Vacuum Electron Devices Group, India.
  14. Proceedings, Fifth Webinar, Expert Talk (Some Aspects of the Development of Cathodes for Microwave Tubes) & Young Researchers' Talk Series (Sectoral Waveguide HPM Mode Converters & Application of Planar Helix Slow-Wave Structure in Backward-Wave Oscillator), 13 Mar. 2021, Thinkers in Vacuum Electron Devices Group, India.
  15. Proceedings, Forth Webinar, Expert Talk: New Frontiers of Sub-THz Wireless Communications Enabled by Travelling-Wave Tubes, 9 Jan. 2021, Thinkers in Vacuum Electron Devices Group, India.
  16. Proceedings, Third Webinar, Expert Talk (First Ever TWT Built in India) & Young Researchers' Talk Series (Large-Signal Analysis of Helix-TWT, & Recent Trends in Millimeter/THz Wave Vacuum Electron Beam Devices), 7 Nov. 2020, Thinkers in Vacuum Electron Devices Group, India.
  17. Proceedings, Second Webinar, Expert Talk (Magnetron) & Young Researchers' Talk Series (Reltron and Relativistic BWO), 5 Sep. 2020, Thinkers in Vacuum Electron Devices Group, India.
  18. Proceedings, First Webinar on Recent Trends and Challenges in Vacuum Electron Devices in Indian Scenario, 1 Aug. 2020, Thinkers in Vacuum Electron Devices Group, India

PAPERS PUBLISHED IN JOURNALS

  1. Abhishek Kumar and Vishal Kesari, "Ultra-wideband TE0,1-mode dielectric window assisted with ring- based meta-surface," Journal of Electromagnetic Waves and Applications, pp. 1-10, 2022. Published online: Jun 21, 2022. (Impact Factor = 1.373#)
  2. Abhishek Kumar and Vishal Kesari, "Meta-surface assisted ultra-wideband dielectric window," Journal of Electromagnetic Waves and Applications, Vol. 36, No. 2, pp. 237-245, Jan. 2022. Published online: Aug 02, 2021. (Impact Factor = 1.373#)
  3. Vishal Kesari and R. Seshadri, "RF and thermo-mechanical examinations of output windows for W-band gyrotron," IEEE Transactions on Electron Devices, Vol. 68, No. 4, pp. 1899-1904, Apr. 2021. (Impact Factor = 2.913#) 
  4. Vishal Kesari, R. Sudhakar and R. Seshadri, "Thermal management of a quasi-optical mirror in a millimetre-wave gyrotron," Fusion Engineering and Design, Elsevier, Vol. 162, p. 112129, Jan. 2021. (Impact Factor = 1.692#)
  5. Vishal Kesari, Sudhakar R., P. Srikrishna and R. Seshadri, "RF and thermal analysis of beam compression unit for a W-band gyrotron," IEEE Transactions on Plasma Science, Vol. 47, No. 12, pp. 5264-5270, Dec. 2019. (Impact Factor = 1.309#) 
  6. Vishal Kesari, "Vacuum electronic device based active denial system," DRDO Technology Spectrum, Book of Technology Day Orations, National Technology Day - 2019, Defence Scientific Information and Documentation Centre, Defence Research and Development Organisation, New Delhi, pp. 135-141, May 2019. (Impact Factor = 0.589#)
  7. Vishal Kesari, Sudhakar R., Jayateertha D., P. Srikrishna, and R. Seshadri, "Simulation of a depressed collector for millimeter-wave gyrotron," Journal of Electromagnetic Waves and Applications, Vol. 33, No. 9, pp. 1107-1118, Apr. 2019 (Published online: Mar. 25, 2019). (Impact Factor = 1.373#)
  8. Vishal Kesari and J. P. Keshari, "Hybrid-mode analysis of circular waveguide with chiral dielectric lining for dispersion characteristics for potential application in broadbanding a gyro-traveling-wave tube," Journal of Electromagnetic Waves and Applications, Vol. 33, No. 2, pp. 204-214, July 2018 (Published online: Oct. 17, 2018). (Impact Factor = 1.373#)
  9. Vishal Kesari and J. P. Keshari, "Broadbanding a gyro-traveling-wave tube by chiral dielectric loading," Journal of Electromagnetic Waves and Applications, Vol. 32, No. 16, pp. 2067-2077, Aug. 2018. (Published online: Jul. 2, 2018) (Impact Factor = 1.373#).
  10. V. Bhanu Naidu, Vishal Kesari, S. Karmakar and R. Seshadri, "Particle-in-cell simulation of a tapered cavity for a millimeter wave gyrotron," IEEE Transactions of Plasma Science, Vol. 46, No. 7(2), pp. 2460-2464, Jul. 2018. (Published online: 05 Feb. 2018) (Impact Factor = 1.309#).
  11. Vishal Kesari and B. N. Basu, "Analysis of some periodic structures of microwave tubes: part II: Analysis of disc-loaded fast-wave structures of gyro-travelling-wave tubes," Journal of Electromagnetic Waves and Applications, Vol. 32, No. 4, pp. 1-36, Apr. 2018. (Published online: 26 Mar. 2018) (Impact Factor = 1.373#).
  12. Shahana K., Vishal Kesari, S. Karmakar and R. Seshadri, "Simulation of TE6,2-to-Gaussian mode converter for a W-band gyrotron," IEEE Transactions of Plasma Science, Vol. 46, No. 1, pp. 84-89, Jan. 2018. (Published online Dec. 5, 2017) (Impact Factor = 1.309#). 
  13. Shahana K.,  Vishal Kesari, S. Karmakar and R. Seshadri, "Simulation of TE6,2-to-Gaussian mode launcher for a millimeter-wave gyrotron," Journal of Electromagnetic Waves and Applications, Vol. 31, No. 17, pp. 1959-1970, Aug. 2017. (Published online 03 Aug. 2017) (Impact Factor = 1.373#).
  14. Vishal Kesari, A. K. Singh, R. Seshadri and S. Kamath, "Correction to Boron Nitride and Sapphire Windows for 95-GHz Gaussian RF Beam" IEEE Transactions on Electron Devices, Vol. 64, No. 8, p. 3524, Aug. 2017. (Impact Factor = 2.913#)
  15. Vishal Kesari and B. N. Basu, "Analysis of some periodic structures of microwave tubes: Part I: Analysis of helical slow-wave structures of traveling-wave tubes," Journal of Electromagnetic Waves and Applications, (Invited Review Article), Vol. 31, No. 1, pp. 1-37, Jan. 2017. (Impact Factor = 1.373#)
  16. Vishal Kesari, A. K. Singh, R. Seshadri and S. Kamath, "RF behavior of boron nitride and sapphire windows for 95 GHz Gaussian RF beam," IEEE Transactions on Electron Devices, Vol. 63, No. 8, pp. 3257 - 3261 Aug. 2016.  (Impact Factor = 2.913#)
  17. Vishal Kesari, "Analysis of alternate dielectric and metal vane loaded circular waveguide for a wideband gyro-TWT," IEEE Transactions on Electron Devices, Vol. 61, No. 3, pp. 915-920, Mar. 2014. (Impact Factor = 2.913#)
  18. R. Garg, G. Mishra, N. Purohit and Vishal Kesari, "Beam-steering in a three-element circular antenna-array," EUMA International Journal of Microwave and Wireless Technologies, 2014. (Impact Factor = 0.976#)
  19. Vishal Kesari and B. N. Basu, "Analysis of beam and magnetic field parameter sensitivity of a disc-loaded wideband gyro-TWT," IEEE Transaction on Plasma Science, Vol. 41, No. 5, Part 2, pp. 1557-1561, May 2013. (Impact Factor = 1.309#)
  20. Vishal Kesari and J. P. Keshari, "Interwoven-disc-loaded circular waveguide for a wideband gyro-traveling-wave tube," IEEE Transaction on Plasma Science, Vol. 41, No. 3, pp. 456-460, Mar. 2013. (Impact Factor = 1.309#)
  21. Vishal Kesari and J. P. Keshari, "Propagation characteristics of a variant of disc-loaded circular waveguide," Progress In Electromagnetic Research M, Vol. 26, pp. 23-37, 2012. (Impact Factor = 0.71#)
  22. Vishal Kesari and J. P. Keshari, "Analysis of a circular waveguide loaded with dielectric and metal discs," Progress In Electromagnetic Research, Vol. 111, pp. 253-269, 2011. (Impact Factor = 1.898#)
  23. Vishal Kesari, "Beam-present analysis of disc-loaded-coaxial waveguide for its application in gyro-TWT (Part-2)," Progress In Electromagnetic Research, Vol. 109, pp. 229-243, 2010. (Recast in Compendium of Research Papers of MTRDC, Vol. 2, 2007-2010). (Impact Factor = 1.898#)
  24. Vishal Kesari "Beam-absent analysis of disc-loaded-coaxial waveguide for its application in gyro-TWT (Part-1)," Progress In Electromagnetic Research, Vol. 109, pp. 211-227, 2010. (Recast in Compendium of Research Papers of MTRDC, Vol. 2, 2007-2010). (Impact Factor = 1.898#)
  25. Vishal Kesari, N. Purohit and M. Thumm, "Analysis of ohmic quality factor of circumferentially corrugated circular cavities," International Journal of Infrared, Millimeter and Terahertz Waves, Vol. 31, No. 4, pp. 510-520, Apr. 2010. (Recast in Compendium of Research Papers of MTRDC, Vol. 2, 2007-2010). (Impact Factor = 1.762#)
  26. Vishal Kesari, "A quick estimate of the ohmic quality factor of a corrugated wall circular cavity," International Journal of Microwave and Optical Technology, Vol. 4, No. 6, pp. 249-257, Nov. 2009. (Recast in Compendium of Research Papers of MTRDC, Vol. 2, 2007-2010). (Impact Factor = 0.64#)
  27. I. Singh, U. Kumar, Vishal Kesari, P. K. Jain, and B. N. Basu, "Electromagnetic analysis of ohmic quality factor for the TE03-mode 42 GHz gyrotron cavity," Asian Journal of Physics, Vol. 17, No. 2, pp. 289-296, April-June 2008.
  28. Vishal Kesari, P. K. Jain and B. N. Basu, "Parameters to define the electron beam trajectory of a double-tapered disc-loaded wideband gyro-TWT in profiled magnetic field," International Journal of Infrared and Millimeter Waves, Vol. 28, No. 6, pp. 443-449, Jun. 2007. (Impact Factor = 1.762#)
  29. Vishal Kesari, P. K. Jain, and B. N. Basu, "Modal analysis of a corrugated circular waveguide for wideband potential in gyro-devices," International Journal of Microwave and Optical Technology, Vol. 2, No. 2, pp. 147-152, Apr. 2007. (Impact Factor = 0.64#)
  30. Vishal Kesari, P. K. Jain and B. N. Basu, "Analysis of a tapered disc-loaded waveguide for a wideband Gyro-TWT," IEEE Transactions on Plasma Science, Special issue - High-Power Microwave Generation, Vol. 34, No. 3, pp. 541-546, Jun. 2006. (Impact Factor = 1.309#)
  31. Vishal Kesari, P. K. Jain and B. N. Basu, "Exploration of a double-tapered disc-loaded circular waveguide for a wideband gyro-TWT," IEEE Electron Device Letters, Vol. 27, No. 3, pp. 194-197, Mar. 2006. (Impact Factor = 4.221#)
  32. Vishal Kesari, P. K. Jain and B. N. Basu, "Modeling of axially periodic circular waveguide with combined dielectric and metal loading," Journal of Physics D: Applied Physics, IoP, Vol. 38, pp. 3523-3529, Sept. 2005. (Impact Factor = 3.169#) 
  33. Vishal Kesari, P. K. Jain and B. N. Basu, "Analysis of a disc-loaded circular waveguide for interaction impedance of a gyrotron amplifier," International Journal of Infrared and Millimeter Waves, Vol. 26, No. 8, pp. 1093-1110, Aug. 2005. (Impact Factor = 1.762#)
  34. Vishal Kesari, P. K. Jain and B. N. Basu, "Analysis of a circular waveguide loaded with thick annular metal discs for wideband gyro-TWTs," IEEE Transactions on Plasma Science, Vol. PS-33, No. 4 pp. 1358-1365, Aug. 2005. (Impact Factor = 1.309#)
  35. Vishal Kesari, P. K. Jain and B. N. Basu, "Approaches to the analysis of a disc loaded cylindrical waveguide for potential application in wideband gyro-TWTs," IEEE Transactions on Plasma Science, Vol. PS-32 No. 5 pp. 2144-2151 Oct. 2004. (Impact Factor = 1.309#)

#As per Journal Citation Report-2012

PAPERS PRESENTED AT CONFERENCES

  1. Shobha H. R. Ogar Ram, S. Anuradha and Vishal Kesari, "A novel interaction structure for a wideband TE1,1-mode gyro-travelling-wave tube," 2024 IEEE International Conference on Recent Inovation in Smart and Sustainable Technology (ICRISST-2023), Precidency University, Bengaluru, India (08 and 09 Mar. 2024) (Submitted).

  2. Ogar Ram, Shobha H. R., S. Anuradha and Vishal Kesari, "Simulation based study of azimuthal and axial periodic interaction structure for a gyro-travelling-wave tube," 2024 IEEE International Conference on Recent Inovation in Smart and Sustainable Technology (ICRISST-2023), Precidency University, Bengaluru, India (08 and 09 Mar. 2024) (Submitted).

  3. Varshini H. P., Sakib Reza and Vishal Kesari, "Simulation of meta-surface assisted ultra-wideband millimeter-wave window," 2024 IEEE International Conference on Recent Inovation in Smart and Sustainable Technology (ICRISST-2023), Precidency University, Bengaluru, India (08 and 09 Mar. 2024) (oral presentation). (Accepted).

  4. विशाल केशरी एवं मंजु के.,"हेलिक्स-चल-तरंग-नलिका के लिए विस्तृत-आवृत्ति-प्रसार वाला समक्षीय युग्मक," प्रथम अखिल भरतीय राजभाषा सम्मेलन, संग्राम वाहन अनुसंधान एवं विकास स्थापना,सी. वी. आर. डी. ई.,चेन्नई,भारत (जनवरी 10 और 11, 2024)।[Vishal Kesari and Manju K., "Braodband coaxial coupler for helix-traveling-wave tube," First All India Rajbhasha Conference, Combat Vehicles Research and Development Establishment (CVRDE), Chennai, India (January 10 and 11, 2024).]

  5. ओगर राम, शोभा एच. आर., एस. अनुराधा और विशाल केशरी, "विस्तृत-आवृति-प्रसार वाली जाइरो-चल-तरंग नलिका के लिए प्रस्तावित दिगंशीय और अक्षीय आवर्तित एक नई संयोग-संरचना," अखिल भारतीय संयुक्त राजभाषा, वैज्ञानिक एवं तकनीकी संगोष्ठी "उत्कर्ष-2024",कृत्रिम ज्ञान तथा रोबोटिकी केंद्र,बेंगलुरु,भारत (18 और 19 जनवरी 2024)।[Ogar Ram, Shobha H. R., S. Anuradha and Vishal Kesari, "A novel azimuthal and axial periodic interaction structure proposed for a wideband gyro-travelling-wave tube," All India Combined Rajbhasha Scientific and Technological Seminar "Uatkarsh-2024" Centre for Artificial Intelligence and Robotics (CAIR), Bengaluru, India (18 and 19 Jan. 2024).]

  6. Nani M., S. Kundu, Kuldip, Vishal Kesari, S. Karmakar, and R. Seshadri, "Broadband gain-equalizer for TWTs and MPMs," National Conference on Emerging Trends in Vacuum Electron Devices, VEDA-2023, 23-25 Nov. 2023, Godavari Institute of Engineering and Technology, Rajamundry, Andhra Pradesh, India (oral presentation).

  7. विशाल केशरी और एम विजय कुमार, "गैर-सममित चुंबकीय-क्षेत्र प्रोफ़ाइल के लिए विद्युत-चुम्बक काअनुकूलन" सन्युक्त राजभाषा वैज्ञानिक एवं तकनीकी संगोष्ठी - 2023,रक्षा अनुसंधान एवं विकास स्थापना, ग्वालियर, भारत (नवम्बर 29 और 30, 2023), pp. 197-206, 2023. [Vishal Kesari and M. Vijayakumar, "Optimizing electromagnet for non-symmetric magnetic-field profile," Combined Rajbhasha Scientific and Technical Seminar - 2023, Defence Research and Development Establishment, Gwalior, India (Nov. 29 and 30, 2023), pp. 197-206, 2023 (Oral presentation)].

  8. विशाल केशरी और जयतिर्थ डी, "मिलीमीटर-तरंग जाइरोट्रॉन के लिए एकल-चरण डिप्रेस्ड संग्राहक में चुंबकीय-क्षेत्र की संवेदनशीलता," राष्ट्रीय वैज्ञानिक एवं तकनिकी राजभाषा संगोष्ठी,टी. बी. आर. एल., चंड़ीगढ़,भारत (12-13 अक्टूबर 2023) (Oral presentation) (in Hindi) ।[Vishal Kesari and Jayateertha D, "Sensitivity of magnetic-field profile in single-stage depressed collector of millimeter-wave gyrotron," National Scientific and Technical Official Language Seminar, TBRL, Chandigrah, India to be held 12-13 Oct. 2023.] 

  9. Vishal Kesari, "C-X-Ku Band MPM for EW-POD," Kshitij: Unique Conference for Project Directors, 28 and 29 April 2023, at IRDE, Deharadun, organised by Office of Director General, Electronics and Communication Systems, Bengaluru, pp. 82-87, Apr. 2023. 

  10. विशाल केशरी, "मेटा-सतह के उपयोग द्वारा आर एफ खिड़की के विस्तृत आवृत्ति प्रसार की परिकल्पना," राजभाषा तकनीकी संगोष्‍ठी 'उत्‍कर्ष – 2023', सूक्ष्मतरंग नलिका अनुसंधान तथा विकास केंद्र, बेंगलूरु,भारत (मार्च 16 और 17, 2023), pp. 250-255 (Oral presentation) (in Hindi) । [Vishal Kesari, "Widening the frequency bandwidth of RF window using concept of meta surface," Rajbhasha Technical Seminar 'Uatkarsh-2023', MTRDC, Bangalore, India (Mar. 16 and 17, 2023), pp.250-255.]

  11. आर गोविंदन एवं विशाल केशरी, "जाइरो चल-तरंग-नलिका के लिए विभिन्न अनुप्रस्थ काट वाली डिस्क-लोडेड सन्योग संरचनाएं," राजभाषा तकनीकी संगोष्‍ठी 'उत्‍कर्ष – 2023', सूक्ष्मतरंग नलिका अनुसंधान तथा विकास केंद्र, बेंगलूरु, भारत (मार्च 16 और 17, 2023), pp. 268-272(Oral presentation) (in Hindi) । [Vishal Kesari, "Disc loaded interaction structures in various cross-section for gyro-travelling-wave tube," Rajbhasha Technical Seminar 'Uatkarsh-2023', MTRDC, Bangalore, India (Mar. 16 and 17, 2023), pp.268-272.]

  12. A. Gupta, S. Verma, G. K. Keshri, Vishal Kesari, S. Karmakar, K. V. Mani, A. Priyadarshi and S. Chouhan, "Acute high-power millimeter wave exposure instigates thermal responses in rat skin," National Conference on Emerging Trends in Vacuum Electronic Devices and Applications, VEDA-2022 (Jan. 19-21, 2023) at Microwave Tube Research and Development Centre (MTRDC), DRDO, Bengaluru, jointly organized by MTRDC-DRDO and VEDA Society, India. (Oral presentation)

  13. A. K. Baranwal, K. Mirjith, Vishal Kesari, R. K. Parida, G. Hegde, P. Sidharthan, S. Senthil Kumar, and R. Seshadri, "Design and development of C-Ku-band MPM for ECM applications," National Conference on Emerging Trends in Vacuum Electronic Devices and Applications, VEDA-2022 (Jan. 19-21, 2023) at Microwave Tube Research and Development Centre (MTRDC), DRDO, Bengaluru, jointly organized by MTRDC-DRDO and VEDA Society, India. (Oral presentation)
  14. N. Chandur and Vishal Kesari, "Exploring the meta-surface for broadband TE1,1-mode in circular window," IEEE Wireless, Antenna and Microwave Symposium, IEEE Kolkata Section and National Institute of Technology, Rourkela, India (Jun. 5-8, 2022).
  15. विशाल केशरी, "विस्तृत आवृत्ति प्रसार वाले अनुप्रयोगों के लिए बहुपरत आर एफ खिड़की," संयुक्त राजभाषा  वैज्ञानिक एवं तकनीकी संगोष्‍ठी 'अमृतवाणी - 2021', वायुवाहित प्रणाली केन्‍द्र (कैब्स), बेंगलूरू, भारत (दिसम्बर 14 और 15, 2021) (Oral presentation) (in Hindi) । [Vishal Kesari, "Multilayer RF window for broadband applications," Combined Rajbhasha Scientific and Technical Seminar 'Amrutvani-2021', Centre for Airborne Systems (CABS) , Bangalore, India (Dec. 14 and 15, 2021).]
  16. A. Kumar and Vishal Kesari, "Multilayer dielectric window for wideband application," Fourth IEEE International Conference on Advances in Electronics, Computers and Communications (ICAECC-2022) (Jan. 10 and 11, 2021), IEEE Bangalore Section and IEEE Student Branch REVA University Bengaluru, India. (Submitted).
  17. विशाल केशरी, "सूक्ष्‍म- एवं मिलीमीटर-तरंग शक्ति-प्रतिरूपक - एक संकर घटक प्रवर्धक," राजभाषा तकनीकी प्रपत्र प्रतियोगिता - 2021, सी. पी. आर. आई., बेंगलूरू, भारत (अगस्त 2021) (in Hindi) । [Vishal Kesari, "Micro- and millimeter-wave power module-a hybrid component amplifier," Hindi Technical Paper Competition - 2021, CPRI, Bangalore, India (August 2021).]

  18. विशाल केशरी, "उच्च-शक्ति मिलीमिटर तरंग स्रोत जाइरोट्रॉन के लिये खिड़की का विकास," अखि‍ल भारतीय राजभाषा तकनीकी संगोष्‍ठी 'उत्‍कर्ष - 2021', सेना उड़ान योग्‍यता और प्रमाणीकरण केन्‍द्र (सेमिलाक), बेंगलूरू, भारत (मार्च 25 और 26, 2021) (Oral presentation) (in Hindi)। [Vishal Kesari, "Development of window for high power millimeter wave source gyrotron," All India Rajbhasha Technical Seminar 'Uatkarsh-2021', CEMILAC, Bangalore, India (Mar. 25 and 26, 2021).]

  19. Vishal Kesari and R. Seshadri, "RF comparison of windows made of sapphire, silicon nitride and boron nitride for W-band gyrotron," International Conference on Electronics, Computing and Communication Technology, IEEE CONECCT 2020 (Jul. 2-4, 2020) at GITAM University, Bangalore jointly organized by IEEE Bangalore Section and GITAM University, Bangalore, India. (Accepted for oral presentation)

  20. S. Farheen, S. Panigrahi, and Vishal Kesari, "Design of rectangular TE1,0 to circular TE0,1 mode converter," URSI Regional Conference on Radio Science, URSI-RCRS 2020, (Feb. 12-14, 2020) at Indian Institute of Technology, Banaras Hindu University, Varanasi, jointly organized by Indian Radio Science Society, Indian National Committee for URSI, Indian Institute of Technology-BHU, Varanasi, The International Union of Radio Science (URSI) and Indian National Science Academy (INSA). (Poster presentation)

  21. Vishal Kesari, R. Sudhakar, and R. Seshadri, "Thermal analysis for effective cooling of a millimeter-wave mirror," URSI Regional Conference on Radio Science, URSI-RCRS 2020, (Feb. 12-14, 2020) at Indian Institute of Technology, Banaras Hindu University, Varanasi, jointly organized by Indian Radio Science Society, Indian National Committee for URSI, Indian Institute of Technology-BHU, Varanasi, The International Union of Radio Science (URSI) and Indian National Science Academy (INSA). (Oral presentation)

  22. विशाल केशरी, "उच्च-शक्ति निर्वात इलेक्ट्रॉन युक्ति पर आधारित सक्रिय डिनायल प्रणाली," अखि‍ल भारतीय राजभाषा तकनीकी संगोष्‍ठी 'उत्‍कर्ष - 2020', रक्षा खाद्य अनुसंधान प्रयोगशाला (डी.एफ.आर.एल.), मैसूर, भारत (जनवरी 16 और 17, 2020) (Oral presentation) (in Hindi) । [Vishal Kesari, "High Power Vacuum Electron Device based Active Denial System," All India Rajbhasha Technical Seminar 'Uatkarsh-2020', Defence Food Research Laboratory (DFRL) , Mysore, India (Jan 16 and 17, 2020).]

  23. Vishal Kesari and R. Seshadri, "Method for generating gain equalizer attenuation profile in broadband microwave power module," National Symposium on Vacuum Electronic Devices and Applications, VEDA-2019 (Nov. 21-23, 2019) at National Institute of Technology, (NIT), Patna, jointly organized by NIT-Patna and VEDA Society, India. (To be submitted)

  24. C. Suresh, P. R. R. Rao, Vishal Kesari and L. Christie, "Design and simulation of 2-stage depressed collector for a high power helix TWT," National Symposium on Vacuum Electronic Devices and Applications, VEDA-2019 (Nov. 21-23, 2019) at National Institute of Technology, (NIT), Patna, jointly organized by NIT-Patna and VEDA Society, India. (Oral presentation)

  25. विशाल केशरी, "गैर-घातक हथि‍यार के रुप में सक्रीय डि‍नायल प्रणाली," राजभाषा तकनीकी प्रपत्र प्रतियोगिता - 2019, सी. पी. आर. आई., बेंगलूरू, भारत (जुलाई 15, 2019) (in Hindi) । [Vishal Kesari, "Active Denial System as a Non-lethal Weapon," Hindi Technical Paper Competition - 2019, Central Power Research Institute (CPRI), Bangalore, India (July 15, 2019).]

  26. विशाल केशरी, "95-गीगाहर्ट्ज़ जाइरोट्रॉन के विकास-पथ पर डी.आर.डी.ओ.," अखि‍ल भारतीय राजभाषा तकनीकी संगोष्‍ठी 'उत्‍कर्ष - 2019', इलेक्ट्रानिक तथा रेडार विकास स्थापना (एल.आर.डी.ई.), बेंगलूरु, भारत, (जनवरी 21 और 22, 2019) (Submitted) (in Hindi) । [Vishal Kesari, "DRDO on the track of development of 95-GHz Gyrotron," All India Rajbhasha Technical Seminar 'Uatkarsh-2019', Electronics and Radar Development Establishment (LRDE) , Bangalore, India (Jan 21 and 22, 2019).]

  27. Vishal Kesari, R. Hemamalini and R. Seshadri, "Simulation based design of impedance transformer for coaxial-window characterization," National Symposium on Vacuum Electronic Devices and Applications, VEDA-2018 (Nov. 22-24, 2018) at Centre for High Power Microwave Tube and Component Technology, IIT Guwahati, jointly organized by IIT-Guwahati and SAMEER-IIT-Guwahati, India. (Oral presentation)

  28. R. Govindan and Vishal Kesari, "Disc-loaded interaction structures in various cross-sections for gyro travelling-wave tubes," National Symposium on Vacuum Electronic Devices and Applications, VEDA-2018 (Nov. 22-24, 2018) at Centre for High Power Microwave Tube and Component Technology, IIT Guwahati, jointly organized by IIT-Guwahati and SAMEER-IIT-Guwahati, India. (Oral presentation).

  29. विशाल केशरी, "जाइरोट्रान - नई पीढ़ी की निर्वात इलेक्‍ट्रान युक्ति," राजभाषा तकनीकी प्रपत्र प्रतियोगिता - 2018,सी. पी. आर. आई., बेंगलूरू,भारत (मई 30, 2018) (in Hindi) । [Vishal Kesari, "Gyrotron - A new generation vacuum electron device," Hindi Technical Paper Competition - 2018, Central Power Research Institute (CPRI), Bangalore, India (May 30, 2018).]

  30. विशाल केशरी, "मध्यम शक्ति के लिए सूक्ष्‍मतरंग नलिका से सूक्ष्‍मतरंग शक्ति प्रतिरूपक की ओर," राष्ट्रीय संगोष्‍ठी मेक-इन-इंडिया: सामाजिक महत्व की प्रौद्योगिकियां, वार्षिक हिंदी संगोष्‍ठी' अंश -2018', सी.एस.आई.आर. - राष्ट्रीय वांतरि‍क्ष प्रयोगशालाएं, बेंगलूरु, भारत (मई 17 और 18, 2018), (oral presentation) (in Hindi) । [Vishal Kesari, "Microwave tube to microwave power module for medium power level," National Seminar on Make-in-India Technologies of Societal Importance, Annual Hindi Seminar 'Ansh-2018', CSIR - National Aerospace Laboratories, Bangalore, India (May 17 and 18, 2018).]

  31. Vishal Kesari and R. Seshadri, "Magnetic field sensitivity in a depressed collector for millimeter-wave gyrotron," Abstract Book International Conference on Emerging Trends in Communication, Computing and Electronics 'IC3E-2018', J. K. Institute of Applied Physics and Technology, Department of Electronics and Communication, University of Allahabad, Allahabad, India (Apr. 13-15, 2018) , paper ID 21, pp. 39-40, 2018 (oral presentation).

  32. विशाल केशरी, "सुरक्षित, सशक्‍त एवं सक्षम भारत हेतु नि‍र्वात इलेक्‍ट्रान युक्‍ति‍याँ," अखि‍ल भारतीय राजभाषा तकनीकी संगोष्‍ठी 'उत्‍कर्ष -2018', रक्षा खाद्य अनुसंधान प्रयोगशाला (डी.एफ.आर.एल.), मैसूर, भारत (जनवरी 24 और 25, 2018) (Oral presentation) (in Hindi). [Vishal Kesari, "Vacuum electron devices for protected, powerful and competent India," All India Rajbhasha Technical Seminar 'Uatkarsh-2018', Defence Food Research Laboratory (DFRL), Mysore, India (Jan. 24 and 25, 2018).]

  33. Vishal Kesari and R. Seshadri, "Broadband coaxial coupler for helix travelling-wave tube," National Symposium on Vacuum Electronic Devices and Applications 'VEDA-2017', Indian Institute of Technology, Roorkee, India (Nov. 17-19, 2017) (Oral presentation).

  34. P. Adi, N. Pathak, M. Vijayakumar and Vishal Kesari, "Optimizing electromagnet coils for magnetic-field profiles," National Symposium on Vacuum Electronic Devices and Applications 'VEDA-2017', Indian Institute of Technology, Roorkee, India (Nov. 17-19, 2017) (Oral presentation).

  35. विशाल केशरी, "जाईरोट्रान युक्ति - एक उच्च-शक्ति मिलीमीटर-तरंग स्रोत," वि‍ज्ञान एवं प्रौद्योगि‍की संगोष्‍ठी, 'अंश - 2017', सी.एस.आई.आर. - राष्ट्रीय वांतरि‍क्ष प्रयोगशालाएं, बेंगलूरु (मई 19, 2017) (Oral presentation) (in Hindi). [Vishal Kesari, "Gyrotron device - A high power millimeter-wave source," Science and Technology Seminar 'Ansh-2017', CSIR - National Aerospace Laboratories, Bangalore, India (May 19, 2017).]

  36. Vishal Kesari and R. Seshadri, "Design of beam tunnel for a millimeter-wave gyrotron," National Conference on Emerging Trends on Vacuum Electronic Devices and Applications 'VEDA 2016', Institute of Plasma Research, DAE, Gandhinagar, India (Mar. 16-18, 2017) (Oral presentation).

  37. Jayateertha D., Vishal Kesari, S. Karmakar and R. Seshadri, "Simulation of depressed collector for a millimeter-wave gyrotron," National Conference on Emerging Trends on Vacuum Electronic Devices and Applications 'VEDA 2016', Institute of Plasma Research, DAE, Gandhinagar, India (Mar. 16-18, 2017) (Oral presentation).

  38. विशाल केशरी, "वैज्ञानिकी, औद्योगिकी एवं जैविकी के लिए जाईरोट्रान युक्ति," अखि‍ल भारतीय राजभाषा तकनीकी संगोष्‍ठी 'उत्‍कर्ष - 2017', (Oral presentation) (in Hindi). [Vishal Kesari, "Gyrotron device for scientific, industrial and biological applications," All India Rajbhasha Technical Seminar 'Uatkarsh-2017'.]

  39. Shahana K., Vishal Kesari, S. Kamakar and R. Seshadri, "Design of a short-length mode launcher for a millimeter-wave gyrotron," International Symposium on Microwaves (ISM) 2016, Bangalore, India (Dec. 21 and 22, 2016).

  40. विशाल केशरी, सूक्ष्‍मतरंग नलिकाएं एवं ठोस-अवस्था युक्तियों से इनकी तुलना," अखि‍ल भारतीय राजभाषा तकनीकी संगोष्‍ठी 'उत्‍कर्ष-2016', (फरवरी 12, 2016) (Oral presentation) (in Hindi) [Vishal Kesari, "Microwave Tubes and its comparison with Solid-state Devices," Hindi Technical Paper Competition 2016 (May 29, 2016).
  41. विशाल केशरी, "सूक्ष्‍मतरंग शक्ति प्रतिरूपक," अखि‍ल भारतीय राजभाषा तकनीकी संगोष्‍ठी 'उत्‍कर्ष-2016', (फरवरी 12, 2016) (Oral presentation) (in Hindi). [Vishal Kesari, "Microwave Power Module," All India Rajbhasha Technical Seminar 'Uatkarsh-2016', (Feb. 12, 2016).]
  42. Jeevan M., Vishal Kesari, and S. Kamath, "Beam Present Simulation of TE10,4 Mode Gyrotron Cavity," National Conference on Emerging Trends on Vacuum Electronic Devices and Applications 'VEDA 2015', Microwave Tube Research and Development Centre, DRDO, Bangalore, (Dec. 3-5, 2015) pp. 31-34 (Oral presentation).
  43. विशाल केशरी, विभिन्न अनुप्रयोगों हेतु मिलीमीटर-तरंग जाईरोट्रान," राष्ट्रीय वि‍ज्ञान एवं प्रौद्योगि‍की संगोष्‍ठी, 'अंश-२०१५', राष्ट्रीय वांतरिक्ष प्रयोगशालाएं (सी.एस.आई.आर.), बेंगलुरु (१४ और १५ मई २०१५) (Oral presentation) (in Hindi). [Vishal Kesari, "Millimeter-wave Gyrotrons for Various Applications," National Science and Technical Seminar 'Ansh-2015', National Aeronautics Laboratories (CSIR), Bangalore, (May 14 and 15, 2015).]
  44. विशाल केशरी, "सक्रीय डि‍नायल प्रणाली - एक गैर-घातक हथि‍यार," अखि‍ल भारतीय राजभाषा तकनीकी संगोष्‍ठी 'उत्‍कर्ष-2015', (मार्च 03, 2015) (Oral presentation) (in Hindi) [Vishal Kesari, "Active Denial System - A nonlethal weapon," All India Rajbhasha Technical Seminar 'Uatkarsh-2015', (Mar. 03, 2015).] 
  45. विशाल केशरी, "सूक्ष्‍मतरंग नलि‍काएं," राष्‍ट्रीय वैज्ञानि‍क एवं तकनीकी संगोष्‍ठी,चरम प्राक्षेपि‍की अनुसंधान प्रयोगशाला (डी.आर.डी.ओ.), चण्‍डीगढ़ (जनवरी 28 और 29, 2015) (Oral presentation) (in Hindi). [Vishal Kesari, "Microwave Tubes," National Scientific and Technical Seminar, Terminal Ballistics Research Laboratory (DRDO), Chandigarh, India (Jan. 28 and 29, 2015).]
  46. विशाल केशरी, "सूक्ष्‍मतरंग नलि‍का के वि‍कास के लिए वि‍ज्ञान, इंजनि‍यरिंग एवं तकनीकी," वि‍ज्ञान एवं प्रौद्योगि‍की संगोष्‍ठी, 'अंश-2014', सी.एस.आई.आर. - राष्‍ट्रीय वांतरि‍क्ष प्रयोगशालाएं, बेंगलुरु (मई 23, 2014) pp. 33-40 (Oral presentation) (in Hindi). [Vishal Kesari, "Science, engineering and technologies for development of microwave tubes," Science and Technology Seminar 'Ansh-2014', CSIR - National Aerospace Laboratories, Bangalore, India (May 23, 2014) pp. 33-40.]
  47. विशाल केशरी, "अपेक्षाकृत कम इलेक्‍ट्रान बीम वि‍भव एवं कम चुम्‍बकीय क्षेत्र की आवश्‍यकता के साथ बृहद बैण्‍ड वि‍ड्थ वाली जाइरो चल तरंग नलि‍का," अखि‍ल भारतीय राजभाषा तकनीकी संगोष्‍ठी 'उत्‍कर्ष-2014', (फरवरी 6, 2014) (Oral presentation) (in Hindi). [Vishal Kesari, "A gyro-travelling-wave tube with relatively lower requirement of beam voltage and magnetic field," All India Rajbhasha Technical Seminar 'Uatkarsh-2014', (Feb. 6, 2014).]
  48. Jeevan M., Vishal Kesari, S. Karmakar, S. Kamath, and M. V. Kartikeyan, "Simulation of higher order modes in a tapered circular cavity for a millimeter-wave gyrotron," 9th International Conference on Microwaves, Antenna, Propagation and Remote Sensing (ICMARS-2013), International Centre for Radio Science, Jodhpur, India (Dec. 11-14, 2013) (Oral presentation).
  49. Vishal Kesari, Innovative interaction structures for wideband gyro-TWTs,"Workshop on Vacuum Electronic Devices and Applications,VEDA-Kolleg-2013,Indian Institute of Technology, Roorkee, India (Oct. 18-20, 2013) (Oral presentation).
  50. विशाल केशरी, "धातु डि‍स्‍क लोडिंग द्वारा जाइरो चल तरंग नलि‍का की बैण्‍ड वि‍ड्थ व प्रवर्धन में बढ़त," अखि‍ल भारतीय राजभाषा तकनीकी संगोष्‍ठी 'उत्‍कर्ष-2013', (फरवरी 22, 2013) (Oral presentation) (in Hindi). [Vishal Kesari, "Enhancement of bandwidth and gain of a gyro-travelling-wave tube by metal disc loading," All India Rajbhasha Technical Seminar 'Uatkarsh-2013', (Feb. 22, 2013).]
  51. Vishal Kesari, C. S. Charyulu, Jayateertha D., R. Hemamalini, S. Karmakar, R. Seshadri, S. Kamath, S. Senthil Kumar, M. Vijayabhaskar, and Shankarappa, "Design and development of 100 W C-Ku band helix-TWT," National Symposium on Vacuum Electronic Devices and Applications (VEDA-2012), Central Electronics Engineering Research Institute (CSIR), Pilani, India (Sep. 21-24, 2012) pp. 201-202, (Oral presentation).
  52. V. Srivastava, D. Kumar, A. Jain and Vishal Kesari, "Simulation of inter-modulation components using SUNRAY code for large-signal analysis of a TWT," XIII IEEE International Vacuum Electronic Conference (IVEC-2012), Monterey, USA, pp. 405-406 (Apr. 24-26, 2012) (Poster presentation).
  53. विशाल केशरी, "रक्षा, अंतरिक्ष और औद्योगिक अनुप्रयोगों के लिए मिलीमीटर-तरंग कार्यक्षेत्र में जाइरो-युक्तियाँ," अखि‍ल भारतीय राजभाषा तकनीकी संगोष्‍ठी 'उत्‍कर्ष-2012', (फरवरी 23, 2012) (Oral presentation) (in Hindi). [Vishal Kesari, "Gyro-devices in millimeter-wave range for potential application in defence, space and industry," All India Rajbhasha Technical Seminar, 'Uatkarsh-2012', (Feb. 23, 2012).]
  54. विशाल केशरी, "उच्‍च-शक्‍ति उच्‍च-दक्षता विद्युत चुम्बकीय तरंग स्रोत - साइक्‍लोट्रान रिजोनेन्‍स मेजर," अखि‍ल भारतीय राजभाषा तकनीकी संगोष्‍ठी 'उत्‍कर्ष-2011', (जनवरी 21, 2011) (Oral presentation) (in Hindi). [Vishal Kesari, "High-power high-efficient electromagnetic wave source - Cyclotron resonance MASER," All India Rajbhasha Technical Seminar 'Uatkarsh-2011', (Jan. 21, 2011).]
  55. विशाल केशरी, "पारम्‍परि‍क चलतरंग नलि‍काओं से नई पीढ़ी की चल तरंग नलि‍काओं की ओर," अखि‍ल भारतीय राजभाषा तकनीकी संगोष्‍ठी 'उत्‍कर्ष-2010', पृष्‍ठ 13-16 (मार्च11 और12, 2010) (Oral presentation) (in Hindi). [Vishal Kesari, "From conventional travelling-wave tubes to new generation travelling-wave tubes, All India Rajbhasha Technical Seminar 'Uatkarsh-2010', pp. 13-16, (Mar. 11 and 12, 2010).]
  56. विशाल केशरी और एस. के. दत्‍ता, "जाइरो-चल तरंग नलि‍का के आवृत्‍ति प्रसार वृद्धिकरण मेंदृश्य-सक्रिय (काइरल) तत्‍वों का उपयोग," अखि‍ल भारतीय राजभाषा तकनीकी संगोष्‍ठी 'उत्‍कर्ष-2009', पृष्‍ठ 63-65 (मार्च 5 और 6, 2009) (Oral presentation) (in Hindi). [Vishal Kesari and S. K. Datta, "Use of optically active (Chiral) material for broadbanding a gyro-travelling-wave tube," All India Rajbhasha Technical Seminar 'Uatkarsh-2009', pp. 63-65, (Mar. 5 and 6, 2009).]
  57. Vishal Kesari and S. K. Datta, "An approximate analysis of a chiral dielectric loaded fast-wave structure for gyro-TWTs," Symposium on Vacuum Electronic Devices and Applications (VEDA-2009), Centre of Research in Microwave Tubes, Electronics Engineering, Banaras Hindu University, Varanasi, India (Jan. 08-10, 2009) (Oral presentation).
  58. Vishal Kesari, "A simple electromagnetic analysis for ohmic quality factor and RF efficiency for 42 GHz, TE03-mode, feebly tapered gyrotron cavity," Asia-Pacific Microwave Conference (APMC 2007), Bangkok, Thailand (Dec. 11-14, 2007).
  59. B. N. Basu and Vishal Kesari, "Requirements vis-à-vis trends in microwave tubes," VEDA-Workshop - Vacuum Electronic Devices and Applications 2007, Society of Applied Microwave Electronics Engineering Research (SAMEER), Mumbai (Nov. 22-23, 2007).
  60. Vishal Kesari, P. K. Jain and B. N. Basu, "Analysis of disc-loaded-coaxial waveguide for wideband and high-gain gyro-TWTs," 7th International Symposium on Antennas, Propagation, and EM Theory (ISAPE-2006), GuiLin, Guangxi Province, China (Oct. 26-29, 2006),pp. 1-2, (Oral presentation).
  61. Vishal Kesari, P. K. Jain and B. N. Basu, "Field profile in a disc-loaded circular waveguide excited in azimuthally symmetric modes for a gyro-TWT," National Symposium on Vacuum Electronic Devices and Applications (VEDA-2006), Central Electronics Engineering Research Institute (CSIR), Pilani, India (Oct. 11-13, 2006) (Oral presentation).
  62. Vishal Kesari, P. K. Jain and B. N. Basu, "Optimisation of beam parameters and magnetic field for tapered disc-loaded wideband gyro-TWTs," National Conference on Microwave Techniques and Applications: MICROWAVE-2006, Department of Physics, University of Rajasthan, Jaipur, India (Oct. 6-8, 2006) (Oral presentation).
  63. Vishal Kesari, "Cold analysis of disc-loaded circular waveguides for wideband gyro-TWTs," Workshop on High Power RF Devices and Application: HPRDA-2006, College of Engineering and Technology, IFTM Educational Campus, Moradabad, India (Jul. 20, 2006).
  64. Vishal Kesari, "Hot analysis of disc-loaded circular waveguides for wideband gyro-TWTs," Workshop on High Power RF Devices and Application: HPRDA-2006, College of Engineering and Technology, IFTM Educational Campus, Moradabad, India (Jul. 20, 2006).
  65. Vishal Kesari, "Broadbanding of a gyro-TWT by disc loading," Workshop on "Gyrotron and its applications" Institute for Plasma Research, Gandhinagar (Feb. 20-22, 2006) (Oral presentation).
  66. Vishal Kesari, P. K. Jain, and B. N. Basu, "Fast-wave analysis of a disc-loaded circular waveguide for a millimetre-wave wideband gyro-travelling-wave amplifier," Young Scientist Award Programme: 2005-2006, 93rd Session of Indian Science Congress, Acharya N.G. Ranga Agricultural University, Hyderabad, India (Jan. 3-7, 2006) (Oral presentation).
  67. Vishal Kesari, P. K. Jain, and B. N. Basu, "Dispersion control in a disc-loaded coaxial waveguide for a gyrotron travelling-wave tube amplifier," Indian Conference on Microwaves, Antenna, Propagation and Remote Sensing (InCMARS-2005), International Centre for Radio Science, Jodhpur, India (Dec. 20-22, 2005) (Oral presentation).
  68. R. K. Singh, Vishal Kesari, P. K. Jain, and B. N. Basu, "Start oscillation current and coupling coefficient optimisation for gyrotrons," Indian Conference on Microwaves, Antenna, Propagation and Remote Sensing (InCMARS-2005), International Centre for Radio Science, Jodhpur, India (Dec. 20-22, 2005) (Oral presentation).
  69. Vishal Kesari, P. K. Jain, and B. N. Basu, "Simulation of periodic circular and coaxial waveguides using HFSS," National Conference on Impact of Electronics and Communication on Rural Development, Department of Electronics and Telecommunication, Chouksey Engineering College, Bilaspur, India (Dec. 17 and 18, 2005), (Oral presentation).
  70. विशाल केशरी, "नि‍र्वात इलेक्ट्राँनिकी नि‍कायों के लि‍ए डि‍स्‍क-लोडेड वृत्‍ताकार तरंग नलि‍का का वि‍श्‍लेषण," अखि‍ल भारतीय वैज्ञानि‍क एवं तकनीकी संगोष्‍ठी 'रेडि‍यो तरंग संचरण एवं वि‍द्युत चुम्‍बकीय बाधा', रक्षा इलेक्ट्राँनिकी प्रयोज्‍यता प्रयोगशाला, देहरादून, 10 और 11 नवंबर 2005 ' (Oral presentation in Hindi). [Vishal Kesari, "Analysis of a disc-loaded cylindrical waveguide for vacuum electronic devices," All India Scientific and Technical Seminar 'Radio-wave Transmission and Electomangnetic Interference', Defence Electronics Applications Laboratory, Deharadun, India (10 and 11 Nov. 2005).]
  71. Vishal Kesari, P. K. Jain and B. N. Basu, "Modal analysis of a radially corrugated circular waveguide," Electro-2005, Department of Electronics Engineering, Institute of Technology, Banaras Hindu University, Varanasi, India (Feb. 3-5, 2005), (Oral presentation).
  72. K. V. S. Kumar, Vishal Kesari, P. K. Jain, and B. N. Basu, "Helical coordinate system for electromagnetic problems," Electro-2005, Department of Electronics Engineering, Institute of Technology, Banaras Hindu University, Varanasi, India (Feb. 3-5, 2005), (Oral presentation).
  73. Vishal Kesari, P. K. Jain and B. N. Basu, "Helical corrugation in cylindrical waveguide for mode conversion," 16th Asia-Pacific Microwave Conference (APMC 2004), Department of Electronic Science, University of Delhi South Campus, New Delhi, India (Dec. 15-18, 2004), (Oral presentation).
  74. Vishal Kesari, P. K. Jain and B. N. Basu, "Dispersion characteristics of a disc-loaded coaxial waveguide for gyro-TWTs," International Conference on Submillimeter Science and Technology (ICSST 04), Physical Research Laboratory, Ahamedabad, India (Oct. 15-18, 2004), (Oral presentation).
  75. Vishal Kesari, K. Singh, P. K. Jain and B. N. Basu, "Dispersion shaping a cylindrical waveguide by disc-loading for wide-band gyro-TWTs," 2nd International Conference on Computers and Devices for Communication (CODEC), Institute of Radio Physics and Electronics, University of Calcutta, Kolkata, India (Jan. 1-3, 2004), (Oral presentation).
  76. K. Singh, Vishal Kesari, P. K. Jain and B. N. Basu, "Optimisation of corrugated coaxial cavity parameters in high power gyrotrons," 2nd International Conference on Computers and Devices for Communication (CODEC), Institute of Radio Physics and Electronics, University of Calcutta, Kolkata, India (Jan. 1-3, 2004), (Oral presentation).
  77. Vishal Kesari, P. K. Jain and B. N. Basu, "Analysis of a coaxial waveguide loaded with axially periodic discs on its central conductor," National Symposium on Advances in Microwaves and Light-waves (NSAML'03), University of Delhi South Campus, New Delhi, India (Oct. 11-14, 2003), (Oral presentation).
  78. Vishal Kesari and V. B. Singh, "Studies on the molecular electronic spectra of 2-Phenyl-4-(4-methoxy benzylidene)-2-oxazolin-5-one," 90th Session of Indian Science Congress, Indian Space Research Organisation (ISRO) and Bangalore University, Bangalore, India (Jan. 2-8, 2003), (Poster presentation).
  79. Vishal Kesari, P. K. Jain and B. N. Basu, "Analysis of helically corrugated circular waveguide in TE mode," National Conference on Microwaves, Antenna, Propagation and Remote Sensing, International Center for Radio Science, Jodhpur, India (Dec. 19-21, 2002), (Oral presentation).
  80. V. B. Singh, Vishal Kesari, V. K. Pandey and S. N. Thakur, "Photoacoustic spectra of some polycyclic hetroatomic organic molecules," National Symposium on Atomic, Molecular Structure Interactions and Laser spectroscopy, Department of Physics, Banaras Hindu University, Varanasi, India (Feb. 22-24, 2002), (Poster presentation).
  81. V. K. Pandey, Vishal Kesari, R. L. Prasad and V. B. Singh, "Photoacoustic spectra of 2-(3H) Benzofuranone," 89th Session of Indian Science Congress, Lucknow University, Lucknow, India (Jan. 2-7, 2002), (Poster presentation).

राजभाषा पत्रि‍का में तकनीकी लेख

    1. विशाल केशरी एवं मंजु के.,"मध्यम-शक्ति हेलिक्स-चल-तरंग-नलिका के लिए विस्तृत-आवृत्ति-प्रसार वाला समक्षीय निर्गत युग्मक," राजभाषा गृह-पत्रि‍का – उमंग, सूक्ष्‍मतरंग नलिका अनुसंधान तथा विकास केन्‍द्र, बेंगलूरु, भारत, अंक 18, पृष्‍ठ 01-06, 2023-24 ।

    2. विशाल केशरी और जयतिर्थ डी, "उच्च-शक्ति मिलीमीटर-तरंग जाइरोट्रॉन के डिप्रेस्ड संग्राहक में चुंबकीय-क्षेत्र की संवेदनशीलता का अध्ययन," राजभाषा गृह-पत्रि‍का – उमंग, सूक्ष्‍मतरंग नलिका अनुसंधान तथा विकास केन्‍द्र, बेंगलूरु, भारत, अंक 18, पृष्‍ठ 01-06, 2023-24 ।

    3. विशाल केशरी और एम विजय कुमार, "उच्च-शक्ति, उच्च-आवृत्ति निर्वात इलेक्ट्रान युक्ति के लिए गैर-सममित चुंबकीय-क्षेत्र वाले विद्युत-चुम्बक काअनुकूलन," राजभाषा गृह-पत्रि‍का – उमंग, सूक्ष्‍मतरंग नलिका अनुसंधान तथा विकास केन्‍द्र, बेंगलूरु, भारत, अंक 18, पृष्‍ठ 01-06, 2023-24 ।

    4. विशाल केशरी,"मेटा-सतह से संकल्पित विस्तृत आवृत्ति प्रसार वाली आर एफ खिड़की,"राजभाषा गृह-पत्रि‍का – उमंग, सूक्ष्‍मतरंग नलिका अनुसंधान तथा विकास केन्‍द्र, बेंगलूरु, भारत, अंक 17, पृष्‍ठ 01-06, 2022-23 ।

    5. आर गोविंदन एवं विशाल केशरी, "अनुप्रस्थ काट में परिवर्तन कर जाइरो चल-तरंग-नलिका की आवर्ती सन्योग संरचनाओं का अध्ययन,"राजभाषा गृह-पत्रि‍का – उमंग, सूक्ष्‍मतरंग नलिका अनुसंधान तथा विकास केन्‍द्र, बेंगलूरु, भारत, अंक 17, पृष्‍ठ 41-45, 2022-23 ।

    6. विशाल केशरी, "निर्वात डायोड वाल्व से सूक्ष्मतरंग नलिका तक की ऐतिहासिक समयरेखा," राजभाषा गृह-पत्रि‍का - उमंग, सूक्ष्‍मतरंग नलिका अनुसंधान तथा विकास केन्‍द्र, बेंगलूरु, भारत, अंक 17, पृष्‍ठ 50-52, 2022-23 ।

    7. विशाल केशरी, "ठोस अवस्था युक्ति बनाम सूक्ष्मतरंग नलिका," राजभाषा गृह-पत्रि‍का - उमंग, सूक्ष्‍मतरंग नलिका अनुसंधान तथा विकास केन्‍द्र, बेंगलूरु, भारत, अंक 17, पृष्‍ठ 92-93, 2022-23 ।

    8. विशाल केशरी, "तीन-परत वाली आर एफ खिड़की का विस्तृत आवृत्ति प्रसार के लिए अभिकल्पन," राजभाषा गृह-पत्रि‍का - उमंग, सूक्ष्‍मतरंग नलिका अनुसंधान तथा विकास केन्‍द्र, बेंगलूरु, भारत, अंक 16, पृष्‍ठ 01-06, 2021-22।

    9. विशाल केशरी, "सूक्ष्‍म- एवं मिलीमीटर-तरंग शक्ति-प्रतिरूपक - एक संकर घटक प्रवर्धक," राजभाषा गृह-पत्रि‍का - उमंग, सूक्ष्‍मतरंग नलिका अनुसंधान तथा विकास केन्‍द्र, बेंगलूरु, भारत, अंक 16, पृष्‍ठ 17-22, 2021-22।

    10. विशाल केशरी, "विस्तृत आवृत्ति प्रसार वाली जाइरो चल-तरंग नलिका के लिये अभिनव संयोग संरचनाएं," राजभाषा गृह-पत्रि‍का - उमंग, सूक्ष्‍मतरंग नलिका अनुसंधान तथा विकास केन्‍द्र, बेंगलूरु, भारत, अंक 15, पृष्‍ठ 01-09, 2020-21।

    11. विशाल केशरी, "मिलीमीटर-तरंग पर आधारित सक्रीय डिनायल प्रणाली," राजभाषा गृह-पत्रि‍का - उमंग, सूक्ष्‍मतरंग नलिका अनुसंधान तथा विकास केन्‍द्र, बेंगलूरु, भारत, अंक 14, पृष्‍ठ 13-21, 2019-20 ।

    12. विशाल केशरी, "सूक्ष्मतरंग नलिका अनुसंधान तथा विकास केंद्र द्वारा विकसित किया जा रहा मिलीमीटर-तरंग जाइरोट्रॉन," राजभाषा गृह-पत्रि‍का - उमंग, सूक्ष्‍मतरंग नलिका अनुसंधान तथा विकास केन्‍द्र, बेंगलूरु, भारत, अंक 14, पृष्‍ठ 1-5, 2019-20।

    13. विशाल केशरी, "सूक्ष्मतरंग नलिका अनुसंधान तथा विकास केंद्र - डी.आर.डी.ओ. में विकसित किये जा रहे जाइरोट्रॉन की झलकियां," राजभाषा गृह-पत्रि‍का - उमंग, सूक्ष्‍मतरंग नलिका अनुसंधान तथा विकास केन्‍द्र, बेंगलूरु, भारत, अंक 13, पृष्‍ठ 15-20, 2018-19 ।

    14. विशाल केशरी, "जाइरो चल-तरंग नलिका के लिए परिवर्तनात्मक संयोग संरचनाएं," राजभाषा गृह-पत्रि‍का - उमंग, सूक्ष्‍मतरंग नलिका अनुसंधान तथा विकास केन्‍द्र, बेंगलूरु, भारत, अंक 12, पृष्‍ठ 01-09, 2017-18.

    15. लक्ष्मी तंगप्पन और विशाल केशरी, "सूक्ष्मतरंग नलिका में रिसाव और रिसाव परीक्षण," राजभाषा गृह-पत्रि‍का - उमंग, सूक्ष्‍मतरंग नलिका अनुसंधान तथा विकास केन्‍द्र, बेंगलूरु, भारत, अंक 12, पृष्‍ठ 23-29, 2017-18.

    16. मंजु के. और विशाल केशरी, "सूक्ष्मतरंग नलिका के संयोजन हेतु स्वच्छ कक्ष से सम्बंधित कुछ तथ्य," राजभाषा गृह-पत्रि‍का - उमंग, सूक्ष्‍मतरंग नलिका अनुसंधान तथा विकास केन्‍द्र, बेंगलूरु, भारत, अंक 12, पृष्‍ठ 30-34, 2017-18.

    17. विशाल केशरी, "नि‍र्वात-इलेक्‍ट्रान एवं ठोस-अवस्था युक्‍ति‍याँ - एक तुलनात्मक अध्ययन," राजभाषा गृह-पत्रि‍का - उमंग, सूक्ष्‍मतरंग नलिका अनुसंधान तथा विकास केन्‍द्र, बेंगलौर, अंक 11, पृष्‍ठ 01-04, 2016-17.

    18. विशाल केशरी, "एक उभरता हुआ गैर-घातक हथि‍यार," राजभाषा गृह-पत्रि‍का - उमंग, सूक्ष्‍मतरंग नलिका अनुसंधान तथा विकास केन्‍द्र, बेंगलौर, अंक 10, पृष्‍ठ 01-04, 2015-16. 
    19. विशाल केशरी, "प्रवर्धन विभाजन के आधार पर अनुकल्पित सूक्ष्‍मतरंग-शक्ति-प्रतिरूपक," राजभाषा गृह-पत्रि‍का - उमंग, सूक्ष्‍मतरंग नलिका अनुसंधान तथा विकास केन्‍द्र, बेंगलौर, अंक 10, पृष्‍ठ 14-18, 2015-16.
    20. विशाल केशरी, "जाईरोट्रान ऑसि‍लेटर और इसके विभिन्न अनुप्रयोग," राजभाषा गृह-पत्रि‍का - उमंग, सूक्ष्‍मतरंग नलिका अनुसंधान तथा विकास केन्‍द्र, बेंगलौर, अंक 10, पृष्‍ठ 22-26, 2015-16.
    21. विशाल केशरी, "इलेक्‍ट्रान बीम वि‍भव एवं चुम्बकीय क्षेत्र घटाकर जाइरो चल तरंग नलि‍का की बैण्‍ड विड्थ वृद्धि‍करण का प्रयास," राजभाषा गृह-पत्रि‍का - उमंग, सूक्ष्‍मतरंग नलिका अनुसंधान तथा विकास केन्‍द्र, बेंगलौर, अंक 9, पृष्‍ठ 25-30, 2014-15.
    22. विशाल केशरी, "सूक्ष्‍मतरंग नलि‍काएं : वि‍कास चक्र एवं प्रयुक्‍त वि‍ज्ञान, इंजि‍नि‍यरिंग तथा तकनीकी," राजभाषा गृह-पत्रि‍का - उमंग, सूक्ष्‍मतरंग नलिका अनुसंधान तथा विकास केन्‍द्र, बेंगलौर, अंक 9, पृष्‍ठ 05-13, 2014-15.
    23. विशाल केशरी, "चल तरंग नलि‍काएं और उनकी वि‍कास प्रक्रिया," राजभाषा गृह-पत्रि‍का - सुरभि, भारत इलेक्‍ट्रानिक्‍स, बेंगलौर, अंक 7, पृष्‍ठ 01-05, 2014.
    24. विशाल केशरी, "जाइरो चल तरंग नलि‍का की बैण्‍ड वि‍ड्थ व प्रवर्धन में बढ़त प्राप्‍त करने के लि‍ए संयोग तरंग नलि‍का के आंतरि‍क दीवार में परि‍वर्तन," राजभाषा गृह-पत्रि‍का - उमंग, सूक्ष्‍मतरंग नलिका अनुसंधान तथा विकास केन्‍द्र, बेंगलौर, अंक 8, पृष्‍ठ 01-04, 2013-14.
    25. विशाल केशरी, "रक्षा, अंतरिक्ष और औद्योगिकी के क्षेत्र में जाइरो-युक्तियों का बढ़ता वर्चस्‍व," राजभाषा गृह-पत्रि‍का - उमंग, सूक्ष्‍मतरंग नलिका अनुसंधान तथा विकास केन्‍द्र, बेंगलौर, अंक 7, पृष्‍ठ 01-05, 2012-13.
    26. विशाल केशरी, "जाइरो- युक्तियाँ - रक्षाअनुप्रयोगों के लिए प्रबल प्रतियोगी, "राजभाषा गृह-पत्रि‍का - उमंग, सूक्ष्‍मतरंग नलिका अनुसंधान तथा विकास केन्‍द्र, बेंगलौर, अंक 6, पृष्‍ठ 08-09, 2011-12.
    27. विशाल केशरी, "साइक्‍लोट्रान रिजोनेन्‍स मेजर: एक विद्युत चुम्बकीय तरंग स्रोत," राजभाषा गृह-पत्रि‍का - उमंग, सूक्ष्‍मतरंग नलिका अनुसंधान तथा विकास केन्‍द्र, बेंगलौर, अंक 6, पृष्‍ठ 01-03, 2011-12.
    28. विशाल केशरी, "निर्वात इलेक्‍ट्रान युक्‍तियों की राह के कुछ महत्‍वपूर्ण मिल के पत्‍थर," राजभाषा गृह-पत्रि‍का - उमंग, सूक्ष्‍मतरंग नलिका अनुसंधान तथा विकास केन्‍द्र, बेंगलौर, अंक 5, पृष्‍ठ 01-03, 2009-10.
    29. विशाल केशरी, "जाइरो-चल तरंग नलि‍का के आवृत्‍ति‍-प्रसार वृद्धिकरण में दृश्य-सक्रिय (काइरल) तत्‍वों का उपयोग," राजभाषा गृह-पत्रि‍का - उमंग, सूक्ष्‍मतरंग नलिका अनुसंधान तथा विकास केन्‍द्र, बेंगलौर, अंक 5, पृष्‍ठ 09-10, 2009-10. (पुनः प्रकाशित अखि‍ल भारतीय राजभाषा तकनीकी संगोष्‍ठी 'उत्‍कर्ष - 2009').
    30. विशाल केशरी, "पारम्‍परि‍क चल तरंग नलि‍काओं से नई पीढ़ी की चल तरंग नलि‍काओं की ओर," राजभाषा गृह-पत्रि‍का - उमंग, सूक्ष्‍मतरंग नलिका अनुसंधान तथा विकास केन्‍द्र, बेंगलौर, अंक 5, पृष्‍ठ 23-27, 2009-10. (पुनः प्रकाशित अखि‍ल भारतीय राजभाषा तकनीकी संगोष्‍ठी 'उत्‍कर्ष -2010').

    INVITED TALKS / LECTURES DELIVERED

    1. "Microwave and millimeter-wave vacuum electronic devices," Department of Electronics and Communication Engineering, Birla Institute of Technology, Mesra, Ranchi, India (Feb. 21, 2023).

    2. "Vacuum Electron based Medium to High Power Oscillators and Amplifiers," Five Days Faculty Development Program (Online) on Innovative Research and Development Trends in Electronics and Communication Engineering (Sep. 6 -10, 2021), organized by the Department of Electronics & Communication Engineering, G. L. Bajaj Institute of Technology and Management, Greater Noida, Uttar Pradesh, India.

    3. "High Frequency Characteristics Simulation of Sub-assemblies of Microwave Electron Devices," One Week Short Term Training Programme on Recent Advances in Microwave Engineering and its Applications, Department of Electronics Engineering, Geethanjali College of Engineering and Technology, Cheeryal, Telangana, India (May 24-31, 2021).

    4. "जाईरोट्रान के घटक और कार्यविधि," हि‍न्‍दी कार्यशाला, सूक्ष्‍मतरंग नलि‍का अनुसंधान एवं वि‍कास केन्‍द्र (डी. आर. डी. ओ.), बेंगलूरु, भारत (अगस्त 27, 2019) । ["Subassemblies and Working of Gyrotron," Hindi Workshop, at Microwave Tube Research and Development Centre (DRDO), Bangalore, India (Aug. 27, 2019)].

    5. "Fast-wave Electromagnetic methods for Analysing Disc-loaded Circular Waveguides for their Prospective Application in Gyro-Travelling-Wave Tube," Faculty Development Programme on Advances in Microwave Engineering at Dr. A.P.J. Abdul Kalam Technical University Uttar Pradesh, Lucknow, India (June 11, 2019).

    6. "High Frequency Simulation of Sub-assemblies of Micro- and Millimeter-wave Vacuum Electron Devices," Faculty Development Programme on Advances in Microwave Engineering at Dr. A.P.J. Abdul Kalam Technical University Uttar Pradesh, Lucknow, India (June 12, 2019).

    7. "Proposal of chiral dielectric loading a circular waveguide for broadbanding a gyro-TWT," National Symposium on Vacuum Electronic Devices and Applications, VEDA-2018 at Centre for High Power Microwave Tube and Component Technology, IIT-Guwahati, jointly organized by IIT-Guwahati and SAMEER-IIT-Guwahati, India (Nov. 24, 2018).

    8. "Analytical Techniques to Variants of Disc-loaded Circular Waveguide for their Potential Application in Gyro-Travelling-Wave Tube," at the Department of Electronics Engineering, Indian Institute of Technology, Banaras Hindu University (IIT-BHU), Varanasi organized by IEEE Microwave Theory & Techniques Society, Student Branch Chapter, IIT-BHU, India (Aug. 18, 2018).

    9. "Field-matching Technique to Four Variants of the Dics-loaded Circular Waveguide,"National Symposium on Vacuum Electronic Devices and Applications, VEDA-2017, Indian Institute of Technology, Roorkee, India (Nov. 19, 2017).

    10. "Gyro- and THz-devices for Millimeter- and Submillimeter-wave Applications," 7th Continued Education Programme on Microwave Tubes for Defence Systems at Microwave Tube Research and Development Centre (DRDO), Bangalore, India (Oct. 25, 2018).

    11. "Gyrotron Oscillators for Millimeter- and Submillimeter-wave Applications,"Tutorial: High Power Microwave/ Millimeter Wave Generation and Transportation at National Symposium on Vacuum Electronic Devices and Applications, VEDA-2017, Indian Institute of Technology, Roorkee, India (Nov. 17, 2017).

    12. "High Frequency Simulation of Sub-assemblies of Micro- and Millimeter-wave Vacuum Devices Explored using ANSYS-HFSS," ANSYS Electronics Simulation Expo, AESE-2017, organized by Entuple Technologies, Bangalore at Hotel ITC Gardenia, Bangalore, India (Sep. 01, 2017).

    13. "जाईरोट्रान और इसके उपयोग," हि‍न्‍दी कार्यशाला, सूक्ष्‍मतरंग नलि‍का अनुसंधान एवं वि‍कास केन्‍द्र (डी. आर. डी. ओ.), बेंगलौर, भारत (मार्च 10, 2017). ["Gyrotron and its Applications," Hindi Workshop, at Microwave Tube Research and Development Centre (DRDO), Bangalore, India (Mar. 10, 2017)].

    14. "Advanced microwave tubes - Gyro- and THz-devices," 5th Continued Education Programme on Microwave Tubes for Defence Systems at Microwave Tube Research and Development Centre (DRDO), Bangalore, India (Nov. 23, 2016)

    15. "Capabilities of ANSYS-HFSS for High Frequency Characteristics of Various Sub-assemblies of Slow- and Fast-wave Vacuum Electronic Devices - Explored at MTRDC-DRDO," Integrated Defense Engineering and Analysis Solutions Seminar, IDEASS-2016, organized by Entuple Technologies, Bangalore at Novotel Hotel, Hyderabad, India (Nov. 18, 2016).

    16. "Millimeter-wave Gyrotrons and their Applications," National Workshop on Vacuum Electronic Devices and Applications at Devi Ahilya Vishwavidyalaya, Indore, India (Mar. 20 and 21, 2015).

    17. "Gyro- and THz-Vacuum Electronic Devices - State-of-the-Art," Continued Education Programme on Microwave Tubes for Defence Systems at Microwave Tube Research and Development Centre (DRDO), Bangalore, India (Oct. 29, 2014).
    18. "Innovative Interaction Structures for Wideband Gyro-TWTs," Workshop on Vacuum Electronic Devices and Applications,VEDA Kolleg 2013, Indian Institute of Technology, Roorkee, India (Oct. 18-20, 2013).
    19. "Microwave and millimeter-wave vacuum electronic devices," Indian Institute of Information Technology, Allahabad, India (Sep. 16-21, 2013).
    20. "Innovative Variants of Interaction Structures for Gyro Travelling Wave Tube," Young Scientist Innovative Work 2012-13 at Microwave Tube Research and Development Centre (DRDO), Bangalore, India (Feb. 11, 2013)
    21. "धीमी एवं तीव्र, ब्रॉडबैंड चल-तरंग नलि‍काएं (Slow and Fast, Broadband Travelling-wave Tubes)," हि‍न्‍दी कार्यशाला, सूक्ष्‍मतरंग नलि‍का अनुसंधान एवं वि‍कास केन्‍द्र (डी. आर. डी. ओ.), बेंगलौर, भारत (June 28, 2011).
    22. "Broadbanding of high-power millimeter wave tubes," Gwangju Institute of Science and Technology, Gwangju, South Korea (Dec. 15-24, 2007).
    23. "Field matching technique for disc-loaded circular waveguides for wideband gyro-TWTs," Birla Institute of Technology, Mesra, Ranchi, India (Jan. 25, 2007).
    24. "Analysis of a circular waveguide loaded with annular discs for broadbanding a gyro-TWT," Birla Institute of Technology, Mesra, Ranchi, India (Jan. 3, 2007).
    25. "Dispersion and azimuthal interaction impedance characteristics of disc-loaded circular waveguide," Microwave Tube Research and Development Centre (DRDO), Bangalore, India (Sep. 20, 2006).
    26. "Cold analysis of disc-loaded circular waveguides for wideband gyro-TWTs," Workshop on High Power RF Devices and Application: HPRDA-2006, College of Engineering and Technology, IFTM Educational Campus, Moradabad, India (Jul. 20, 2006).
    27. "Hot analysis of disc-loaded circular waveguides for wideband gyro-TWTs," Workshop on High Power RF Devices and Application: HPRDA-2006, College of Engineering and Technology, IFTM Educational Campus, Moradabad, India (Jul. 20, 2006).
    28. "Broadbanding of a gyro-TWT by disc loading," Workshop on "Gyrotron and its applications" Institute for Plasma Research, Gandhinagar, India (Feb. 21, 2006).

    APART FROM ABOVE MORE THAN 170 TECHNICAL REPORTS DEVELOPED/ COMPILED AT MICROWAVE TUBE R&D CENTRE, DRDO, BANGALORE, INDIA. 

     

    PAPERS PUBLISHED IN JOURNALS

    35

    PAPERS PRESENTED AT CONFERENCES

    81

    TECHNICAL REPORTS DEVELOPED/ COMPILED

    170

    INVITED TALKS / LECTURES DELIVERED

    28

    राजभाषा पत्रि‍का में तकनीकी लेख

    30

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