Title :
Moderate-Power W-Band Cerenkov Traveling-Wave Amplifier
Author :
Wang, Changbiao ; Yakovlev, V.P. ; LaPointe, M.A. ; Hirshfield, J.L.
Author_Institution :
Omega-P, Inc., New Haven
Abstract :
A compact W-band (95 GHz) traveling-wave amplifier design is discussed, in which the slow wave circuit consists of a smooth rectangular waveguide with ceramic dielectric lined side walls. Small-signal performance for the 15-kV, 0.33-A device is predicted to include 30-dB gain for a 7.4-cm long circuit, ~500 W output, 2 GHz instantaneous bandwidth, and 13 GHz voltage-tunable bandwidth. A 2-3 kG solenoidal magnetic field is required for beam focusing. Rectangular geometry for the slow wave circuit allows for longitudinal splitting of the circuit, thus permitting precision fabrication and suppression of non-symmetric competing modes.
Keywords :
rectangular waveguides; slow wave structures; travelling wave amplifiers; bandwidth 13 GHz; bandwidth 2 GHz; beam focusing; ceramic dielectric lined side walls; current 0.33 A; frequency 95 GHz; gain 30 dB; longitudinal splitting; moderate-power W-band Cerenkov traveling-wave amplifier; nonsymmetric competing modes; slow wave circuit; smooth rectangular waveguide; solenoidal magnetic field; voltage 15 kV; Bandwidth; Ceramics; Circuits; Dielectrics; Fabrication; Geometry; Magnetic fields; Performance gain; Rectangular waveguides; Voltage;
Conference_Titel :
Infrared Millimeter Waves and 14th International Conference on Teraherz Electronics, 2006. IRMMW-THz 2006. Joint 31st International Conference on
Conference_Location :
Shanghai
Print_ISBN :
1-4244-0399-5
Electronic_ISBN :
1-4244-0400-2
DOI :
10.1109/ICIMW.2006.368328
