Title :
Dielectric loaded broadband gyro-TWT
Author :
Leou, K.C. ; McDermott, D.B. ; Luhmann, N.C., Jr.
Author_Institution :
Dept. of Electr. Eng., California Univ., Los Angeles, CA, USA
Abstract :
Wideband operation of a gyro-TWT (traveling wave tube) with a dielectric loaded waveguide is demonstrated. Fast wave interaction allows the beam quality requirements to be reduced. Self-consistent nonlinear simulation has been performed and shows that an instantaneous bandwidth of 20% with a moderate efficiency of 13% can be achieved by using a low alpha beam with a 2% axial velocity spread. Parameters for a proposed Ka-band amplifier are given.<>
Keywords :
dielectric-loaded waveguides; gyrotrons; microwave amplifiers; travelling-wave-tubes; Ka-band amplifier; axial velocity spread; beam quality requirements; broadband gyro-TWT; dielectric loaded waveguide; efficiency; instantaneous bandwidth; self-consistent nonlinear simulation; Bandwidth; Dielectrics; Loaded waveguides; Wideband;
Conference_Titel :
Electron Devices Meeting, 1990. IEDM '90. Technical Digest., International
Conference_Location :
San Francisco, CA, USA
DOI :
10.1109/IEDM.1990.237101
