Title :
Circuit aspects of the NRL/industrial 94 GHz gyroklystron amplifier
Author :
Pershing, D. ; Nguyen, K. ; Petillo, J. ; Calame, J. ; Danly, B. ; Levush, B.
Author_Institution :
Mission Res. Corp., Newington, VA, USA
Abstract :
A wide bandwidth, high average power W-band gyroklystron amplifier is currently under cooperative development by NRL, Litton Electron Devices, and Communication and Power Industries. The amplifier circuit is comprised of 4 stagger-tuned cavities operating in the fundamental TE 011 circular cavity mode. The input coupler is the first cavity of the circuit and must exhibit reasonable coupling strength between the TE10 mode in the rectangular waveguide and the desired TE011 circular cavity mode over a better than 600 MHz bandwidth centered at 93.4 GHz, with high TE01 mode purity. A single WR-8 rectangular waveguide drives a combined coaxial/cylindrical cavity system. The coaxial cavity resonating in the TE411 mode is tightly coupled to the cylindrical cavity, excited to resonate in the TE011 mode. The RF magnetic field couples the cavities through 4 azimuthally spaced apertures
Keywords :
accelerator RF systems; accelerator cavities; gyrotrons; klystrons; radiofrequency amplifiers; rectangular waveguides; 93.4 GHz; NRL/industrial gyroklystron amplifier; RF magnetic field; TE10 mode; WR-8 rectangular waveguide; accelerator RF system; amplifier circuit; azimuthally spaced apertures; circuit aspects; coaxial cavity; fundamental TE011 circular cavity mode; high average power W-band gyroklystron amplifier; input coupler; stagger-tuned cavities; wide bandwidth; Bandwidth; Coaxial components; Coupling circuits; Electron devices; High power amplifiers; Klystrons; Power industry; Radio frequency; Rectangular waveguides; Tellurium;
Conference_Titel :
Particle Accelerator Conference, 1997. Proceedings of the 1997
Conference_Location :
Vancouver, BC
Print_ISBN :
0-7803-4376-X
DOI :
10.1109/PAC.1997.753136
