Open AccessDesign and simulation of the high‐frequency structure for a G‐band extended interaction klystron
Author(s) -
Hu Linlin,
Zeng Zaojin,
Chen Hongbin,
Ma Guowu,
Meng Fanbao
Publication year - 2018
Publication title -
the journal of engineering
Language(s) - English
Resource type - Journals
ISSN - 2051-3305
DOI - 10.1049/joe.2018.0109
Subject(s) - klystron , amplifier , radar , power (physics) , s band , physics , optics , frequency band , electrical engineering , terahertz radiation , engineering , beam (structure) , telecommunications , antenna (radio) , cmos , quantum mechanics
The G‐band spectrum has been demonstrated to be the frequency of the next generation of space‐borne and ground‐based cloud radar for its higher spatial resolution. Extended interaction klystron (EIK) is one of the most suitable sources for the radar due to its longer lifetime and higher power compared with similar devices. The design and particle simulation of high‐frequency structure for G‐band EIK are presented in this study. The structure employs multiple resonant cavities, and each cavity adopts the ladder‐type multi‐gap structure. The cavities are operating at 2π mode considering the machinability. The simulation result indicates that the amplifier could generate a power of 125 W at 237.5 GHz when driven by a 20 kV, 200 mA round beam and 100 mW input power. This work will be of great potential to develop the G‐band EIK with power above 100 W.