DocumentCode :
1713976
Title :
Study of high power, two-stage, TWT X-band amplifier
Author :
Wang, Peng ; Golkowski, Czeslaw ; Hayashi, Yasuhiro ; Ivers, J.D. ; Nation, J.A. ; Schachter, Levi
Author_Institution :
Sch. of Electr. Eng., Cornell Univ., Ithaca, NY, USA
fYear :
1999
Firstpage :
245
Abstract :
Summary form only given. A disk loaded slow wave structure with a cold wave phase (without electron beam) velocity of the TM/sub 01/ wave greater than the speed of light (1.05c) is used as the electron bunching stage of a two stage X-band amplifier. The high phase velocity section produces well defined electron bunches. The second section, where the cold wave phase velocity is (0.84c), i.e. less than beam velocity of 0.91c, is used to generate the high output power microwave radiation. The tightly bunched beam from the high phase velocity section enhances the beam energy conversion into microwave radiation compared to that obtained with a synchronous electron-wave buncher. A new: amplifier with similar phase velocity characteristics but with a 1 GHz bandwidth and an HEM/sub 11/, TM/sub 01/ mode frequency separation of 3.3 GHz has been designed and constructed. The interaction frequency for the HEM mode is above the passband of the TM mode. Testing is in progress. The performance of the new amplifier will be compared with results obtained using the earlier configuration.
Keywords :
microwave power amplifiers; slow wave structures; travelling wave amplifiers; 1 GHz; 20 to 60 MW; 4 GHz; 500 A; 750 kV; HEM/sub 11/ mode; HEM/sub 11/, TM/sub 01/ mode frequency separation; TM/sub 01/ wave; bandwidth; beam energy conversion; cold wave phase velocity; disk loaded slow wave structure; electron bunching stage; high output power microwave radiation; high phase velocity section; high power two-stage TWT X-band amplifier; interaction frequency; microwave radiation; passband; performance; phase velocity characteristics; speed of light; synchronous electron-wave buncher; tightly bunched beam; two stage X-band amplifier; Bandwidth; Electron beams; Energy conversion; Frequency; High power amplifiers; High power microwave generation; Microwave generation; Passband; Power amplifiers; Power generation;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Plasma Science, 1999. ICOPS '99. IEEE Conference Record - Abstracts. 1999 IEEE International Conference on
Conference_Location :
Monterey, CA, USA
ISSN :
0730-9244
Print_ISBN :
0-7803-5224-6
Type :
conf
DOI :
10.1109/PLASMA.1999.829568
Filename :
829568
Link To Document :
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