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

Volume

26

Issue

3

fYear

1998

fDate

6/1/1998 12:00:00 AM

Firstpage

488

Lastpage

495

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 Δυ_z/υ_z=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;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/27.700782

Filename

700782