EXPERIMENTAL-OBSERVATION OF COHERENT MILLIMETER-WAVE RADIATION IN A FOLDED WAVE-GUIDE EMPLOYED WITH A GYRATING ELECTRON-BEAM

Authors
CHOI JJ ARMSTRONG CM CALISE F GANGULY AK KYSER RH PARKS GS PARKER RK WOOD F
Citation
Jj. Choi et al., EXPERIMENTAL-OBSERVATION OF COHERENT MILLIMETER-WAVE RADIATION IN A FOLDED WAVE-GUIDE EMPLOYED WITH A GYRATING ELECTRON-BEAM, Physical review letters, 76(22), 1996, pp. 4273-4276
Citations number
12
Categorie Soggetti
Physics
Journal title
Physical review letters → ACNP
ISSN journal
00319007
Volume
76
Issue
22
Year of publication
1996
Pages
4273 - 4276
Database
ISI
SICI code
0031-9007(1996)76:22<4273:EOCMRI>2.0.ZU;2-K
Abstract
The first experimental observation of a strong millimeter wave radiati on from a gyrating electron beam propagating through an H-plane bend r ectangular folded waveguide is reported. Measurements of power, freque ncy, and relative phase change of both forward- and backward-wave radi ations verified that the oscillation originated from an absolute insta bility near a stop band of the second space harmonic. A high power rad iation of 5.5 kW which corresponds to an electronic efficiency of 24% was observed at 32.8 GHz.