Title :
NRL ubitron amplifier performance
Author :
Pershing, D.E. ; Seeley, R.D. ; Jackson, R.H. ; Freund, H.P.
Author_Institution :
Mission Res. Corp., Newington, VA, USA
Abstract :
Research is continuing on the NRL K/sub u/-band ubitron amplifier after several major component modifications. Specifically, the input coupler has been modified for broader bandwidth and lower transmission loss, and the wiggler has been redesigned to generate a much more uniform field in the interaction region and lengthened. Steps have also been taken to remove discontinuities that excited oscillations at high wiggler fields. With a 250 kV, 100 A, 4 mm radius beam and these modifications, we anticipate saturated gain of 25-30 db, output power of 1-5 MW, efficiency greater than 15%, and bandwidth exceeding 20% in the 12.4-18 GHz band. Measurements will be compared with the 3-D nonlinear code ARACHNE.<>
Keywords :
microwave amplifiers; microwave tubes; 1 to 5 MW; 100 A; 12.4 to 18 GHz; 15 percent; 25 to 30 dB; 250 kV; 3-D nonlinear code; 4 mm; ARACHNE; NRL K/sub u/-band ubitron amplifier; bandwidth; discontinuities; input coupler; oscillations; transmission loss; wiggler; Bandwidth; Broadband amplifiers; Couplings; Magnetic separation; Optical reflection; Propagation losses; Solenoids; Temperature; Undulators; Wire;
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.1993.347374
