Dr. Vishal Kesari
“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.
“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.
“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.
“Modeling of axially periodic circular waveguide with combined dielectric and metal loading,” Journal of Physics D: Applied Physics, IoP (UK)vol. 38, pp. 3523-3529, Sept. 2005.
“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.
“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.
“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 (online).
“Parameters to define the electron beam trajectory of a double-tapered disc-loaded wideband gyro-TWT in profiled magnetic field,” Int. J. Infrared and Millimeter Waves, vol. 28, No. 6, pp. 443-449, Jun. 2007.
“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.
“Interaction impedance characteristics of a disc loaded circular waveguide for wideband gyro-travelling-wave tubes,” Indian Journal of Pure and Applied Physics (India) (under review).
“Analysis of the effect of interaction cavity taper on gyrotron efficiency,” IEEE Transactions on Plasma Science (under review).
“An electromagnetic technique to estimate ohmic quality factor of a nonsmooth wall circular cavity,” IEEE Transactions on Microwave Theory and Techniques (under review).
"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 (Jan. 08-10, 2009) (Oral presentation).
"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).
"Requirements vis-à-vis trends in microwave tubes," VEDA-Workshop - Vacuum Electronic Devices and Application 2007, Society of Applied Microwave Electronics Engineering Research (SAMEER), Mumbai (Nov. 22-23, 2007).
"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).
"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, (Oct. 11-13, 2006) (Oral presentation).
"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, (Oct. 6-8, 2006) (Oral presentation).
"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).
"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, (Jan. 3-7, 2006) (Oral presentation).
"Dispersion control in a disc-loaded coaxial waveguide for a gyrotron travelling-wave tubes amplifier," Indian Conference on Microwaves, Antenna, Propagation and Remote Sensing (InCMARS-2005), International Centre for Radio Science, Jodhpur (Dec. 20-22, 2005) (Oral presentation).
"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 (Dec. 20-22, 2005) (Oral presentation).
“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, (Dec. 17 and 18, 2005), (Oral presentation).
"Analysis of disc-loaded circular waveguides for the vacuum electronic devices," All India Scientific/ Technological Conference on RF Wave Propagation and Electromagnetic Interference, Defence Electronics Application Laboratory, Deharadoon, (Nov. 10 and 11, 2005) (Oral presentation in Hindi).
"Modal analysis of a radially corrugated circular waveguide," Electro-2005, Department of Electronics Engineering, Institute of Technology, Banaras Hindu University, Varanasi, (Feb. 3-5, 2005), (Oral presentation).
"Helical coordinate system for electromagnetic problems," Electro-2005, Department of Electronics Engineering, Institute of Technology, Banaras Hindu University, Varanasi, (Feb. 3-5, 2005), (Oral presentation).
"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, (Dec. 15-18, 2004), (Oral presentation).
"Dispersion characteristics of a disc-loaded coaxial waveguide for gyro-TWTs," International Conference on Submillimeter Science and Technology (ICSST 04), Physical Research Laboratory, Ahamedabad (Oct. 15-18, 2004). (Oral presentation).
"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, (Jan. 1-3, 2004), (Oral presentation).
"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, (Jan. 1-3, 2004), (Oral presentation).
"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, (Oct. 11-14, 2003), (Oral presentation).
"Analysis of helically corrugated circular waveguide in TE mode," National Conference on Microwaves, Antenna, Propagation and Remote Sensing, International Center for Radio Science, Jodhpur (Dec. 19-21, 2002), (Oral presentation).
“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, (Jan. 2-8, 2003), (Poster presentation).
“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, (Feb. 22-24, 2002), (Poster presentation).
“Photoacoustic spectra of 2-(3H) Benzofuranone,” 89th Session of Indian Science Congress, Lucknow University, Lucknow, (Jan. 2-7, 2002), (Poster presentation).