Title :
Accurate band-edge modeling of wideband TWTs
Author :
Whaley, David R. ; Armstrong, Carter M. ; Barsanti, Marc L. ; Hargreaves, Thomas A. ; True, R.B. ; Watkins, Ray
Author_Institution :
Electron Devices, L-3 Commun., San Carlos, CA, USA
Abstract :
Accurate modeling of TWTs which operate over a frequency range in excess of one octave present particular challenges when attempting to reproduce or predict measured data for both small signal and saturated gain as well as saturated power across the frequency band. The most difficult performance to predict of these wideband TWTs has proven to be the high band-edge power and gain, which often can be in error by many dB when compared to actual device operation. In this paper, we investigate various effects which result in high-band-edge modeling errors and compare computed results to experimental TWT data of an L-3 X-Ku band TWT.
Keywords :
microwave tubes; travelling wave tubes; L-3 X-Ku band TWT; RF modeling errors; high band-edge saturated gain; operating frequency range; saturated power; small signal gain; wideband TWT band-edge modeling accuracy; Attenuation; Circuit simulation; Computational modeling; Electron beams; Frequency measurement; Gain measurement; Power measurement; Predictive models; Radio frequency; Wideband;
Conference_Titel :
Vacuum Electronics Conference, 2004. IVEC 2004. Fifth IEEE International
Print_ISBN :
0-7803-8261-7
DOI :
10.1109/IVELEC.2004.1316192
