Asian Journal of Physics Vol 32, Nos 9 – 12 (2023) 435-441

Design of a 94 GHz PBG-based multi-beam EIK

Vemula Bhanu Naidua, Dipanjan Gopeb and Subrata Kumar Dattaa
aMicrowave Tube Research and Development Centre (MTRDC), DRDO, Bengaluru-560 013, India
bDepartment of Electrical Communication Engineering, Indian Institute of Science (IISc), Bengaluru-560 012, India
Dedicated to Prof B N Basu

Feasibility of a photonic band-gap (PBG) based multiple-beam extended interaction klystron amplifier was explored analytically through 3D electromagnetic simulation. The design of the RF interaction structure was carried out employing a six-defect PBG-based cavity structure operating at around 94 GHz for facilitating electron-wave interaction at 2π-mode with 6 electron beams each carrying 300 mA current at the accelerating potential of 17.5 kV. The device is configured using an input cavity, four buncher cavities and an output cavity and the design was optimized through simulation using commercial electromagnetic simulation code CST Studio. Particle-in-cell simulation promises peak output power of about 3.7 kW with gain of about 55 dB, hot 3 dB bandwidth of about 0.17% and electronic efficiency of about 11.7%. © Anita Publications. All rights reserved.
Keywords: Extended interaction klystron, Multiple-beam klystron, Photonic band-gap (PBG) cavity structure.

Peer Review Information
Method: Single- anonymous; Screened for Plagiarism? Yes
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