Title :
Broadband operation of a two-stage tapered gyro-TWT amplifier
Author :
Park, Gwan Soo ; Choi, J.J. ; Park, Sung Yun ; Armstrong, C.M. ; Ganguly, A.K. ; Kyser, R.H.
Author_Institution :
Naval Res. Lab., Washington, DC, USA
Abstract :
A two-stage Ka-band gyro-TWT amplifier experiment operating in the TE/sub 10/ rectangular tapered waveguide mode at the fundamental cyclotron frequency is underway at the Naval Research Laboratory. The objective of this program is to demonstrate the stable wideband operation of a low voltage tapered gyro-TWT having high gain and good gain uniformity. Initial experiments operating at 33 kV and 1.5 A have demonstrated a linear gain of 30 d8, saturated gain of 26 dB over an 8% 3 dB-bandwidth, and maximum efficiency of 15%. The operation is compared with theory.<>
Keywords :
gyrotrons; microwave amplifiers; rectangular waveguides; travelling-wave-tubes; wideband amplifiers; 1.5 A; 15 percent; 26 dB; 30 dB; 33 kV; 33 to 39 GHz; EHF; Ka-band; MM-wave tube; Naval Research Laboratory; TE/sub 10/ rectangular tapered waveguide mode; broadband operation; fundamental cyclotron frequency; gain uniformity; high gain; low voltage tapered gyro-TWT; stable wideband operation; two-stage tapered gyro-TWT amplifier; Broadband amplifiers; Cyclotrons; Frequency; Gain; Laboratories; Low voltage; Operational amplifiers; Rectangular waveguides; Tellurium; Wideband;
Conference_Titel :
Electron Devices Meeting, 1993. IEDM '93. Technical Digest., International
Conference_Location :
Washington, DC, USA
Print_ISBN :
0-7803-1450-6
DOI :
10.1109/IEDM.1993.347336
