Title :
Design of a W/G-band power splitter for harmonic amplifiers
Author :
Xiaoqing Zhang ; Jun Cai ; Yinfu Hu ; Xianping Wu ; Ji Chen ; Jinjun Feng
Author_Institution :
Nat. Key Lab. of Sci. & Technol. on Vacuum Electron., Beijing Vacuum Electron. Res. Inst., Chaoyang, China
Abstract :
In order to reuse the harmonic current in the spent beam of W-band TWT, we have proposed a novel device, which is a G-band 2nd harmonic amplifier with two output ports for W-band and G-band respectively. Based on the rectangular waveguide cutoff characteristic and iris coupling principle, this paper described a new type of power splitter to extract the 2nd harmonic signal in G-band from mixed fundamental and 2nd harmonic signals. The power splitter has the advantages of simple structure and easy fabrication. From the simulation results, the 2nd harmonic bandwidth of the power splitter is found to be more than 4GHz, with and insertion loss less than-1dB.
Keywords :
harmonic analysis; microwave amplifiers; rectangular waveguides; travelling wave tubes; G-band; TWT; W-band; harmonic amplifier; harmonic current reuse; insertion loss; iris coupling principle; power splitter; rectangular waveguide cutoff characteristic; travelling wave tube; 2nd harmonic; G-band; Power splitter; W-band;
Conference_Titel :
Vacuum Electronics Conference (IVEC), 2015 IEEE International
Conference_Location :
Beijing
Print_ISBN :
978-1-4799-7109-1
DOI :
10.1109/IVEC.2015.7224011
