Design and simulation of the high‐frequency structure for a G‐band extended interaction klystron. Issue 14 (13th June 2018)

• Record Type: Journal Article
• Authors: Hu, Linlin; Zeng, Zaojin; Chen, Hongbin; Ma, Guowu; Meng, Fanbao
• Is Part Of: Journal of engineering. Volume 2018:Issue 14(2018)
• Page Start: 689
• Page End: 691
• Publication Date: 2018-06-13
• Subjects: cavity resonators -- klystrons; G‐band spectrum -- cloud radar -- extended interaction klystron -- power 125.0 W -- frequency 237.5 GHz -- voltage 20.0 kV -- current 200.0 mA -- power 100.0 W -- ladder‐type multigap structure -- multiple resonant cavities; Engineering -- Periodicals; Engineering; Electronic journals; Periodicals; 620.005
• DOI: 10.1049/joe.2018.0109
• Languages: English
• ISSNs: 2051-3305

Abstract

Abstract : 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.