Title :
Circuit design for a wide-band disk-loaded gyro-TWT amplifier
Author :
Leou, K.C. ; Pi, Tao ; McDermott, D.B. ; Luhmann, N.C., Jr.
Author_Institution :
Dept. of Appl. Sci., California Univ., Davis, CA, USA
fDate :
6/1/1998 12:00:00 AM
Abstract :
The design is presented for an all-metal wide-band disk-loaded gyro-TWT amplifier capable of continuous wave (CW) operation that is predicted to generate an output power of 55-75 kW with 30-dB gain and a bandwidth of 20%. The device will employ a magnetron injection gun to produce a 95-kV 5-A electron beam with υ⊥/υ z=0.6 and Δυz/υz=4%. The low dispersion of the periodically loaded rectangular waveguide circuit is predicted by an analytical theory and verified by the eigenmode algorithm of the particle-in-cell code, MAGIC. The concept will be tested in a pulsed, proof-of-principle experiment in the X-band. Except for the disk-loaded interaction circuit and transition, the hardware for the new device was previously employed in a dielectric-loaded wideband gyro-TWT, including the 0-dB E-plane-bend couplers and magnetron injection gun
Keywords :
gyrotrons; microwave power amplifiers; travelling wave amplifiers; wideband amplifiers; 30 dB; 5 kA; 55 to 75 kW; 95 kV; E-plane-bend couplers; MAGIC; X-band; analytical theory; bandwidth; circuit design; continuous wave operation; dielectric-loaded wideband gyro-TWT; disk-loaded interaction circuit; eigenmode algorithm; electron beam; magnetron injection gun; particle-in-cell code; periodically loaded rectangular waveguide circuit; pulsed proof-of-principle experiment; wide-band disk-loaded gyro-TWT amplifier; Bandwidth; Broadband amplifiers; Circuit synthesis; Electron beams; Loaded waveguides; Magnetic devices; Operational amplifiers; Power amplifiers; Power generation; Rectangular waveguides;
Journal_Title :
Plasma Science, IEEE Transactions on
