A Ka-Band Second Harmonic Gyroklystron Amplifier

Author

Xu, Shou-Xi ; Liu, Pu-Kun ; Zhang, Shichang ; Su, Yinong ; Geng, Zhi-Hui ; Gu, Wei ; Xue, Qianzhong ; Han, Bing

Author_Institution

Key Lab. of High-Power Microwave Sources & Technol., Inst. of Electron., Beijing, China

Volume

40

Issue

8

fYear

2012

Firstpage

2099

Lastpage

2104

Abstract

The design and experiment of a ka-band second harmonic gyroklytron amplifier are reported. The three-cavity 35-GHz second harmonic gyroklystron operates in the TE₀₂₁ circular electric mode. Based on the numerical simulation, a three-cavity, second harmonic gyroklystron amplifier prototype has been fabricated. Experiments show a peak output power of 212 kW at 35 GHz with a 3-dB bandwidth of 155 MHz (0.44%) when utilizing a 58 kV, 23 A, v_⊥/v_P = 1.45 electron beam from a magnetron injection gun. The efficiency is approximately 16%, and the gain is about 24 dB.

Keywords

electron beams; electron guns; gyrotrons; klystrons; magnetrons; microwave amplifiers; numerical analysis; TE₀₂₁ circular electric mode; bandwidth 155 MHz; current 23 A; electron beam; frequency 35 GHz; ka-band second harmonic gyroklystron amplifier; magnetron injection gun; numerical simulation; power 212 kW; three-cavity second harmonic gyroklystron amplifier; voltage 58 kV; Cathodes; Cavity resonators; Electron beams; Harmonic analysis; Klystrons; Power amplifiers; Power generation; Gyroklystron amplifier; ka-band; second harmonic;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/TPS.2012.2199522

Filename

6213563