Title :
Velocity dispersion shaping for helix TWT performance improvement
Author :
Frerking, H. ; Lau, L. ; Zavadil, D.
Author_Institution :
Teledyne MEC, Palo Alto, CA, USA
Abstract :
The effects of various dielectric rod cross-sectional profiles on helix velocity dispersion are compared in conjunction with their impact on tube operation. Using these techniques, an 8 to 18 GHz low noise TWT demonstrating excellent gain flatness, good overdrive and harmonic separation has been developed. Detailed design and performance data for this TWT is presented. Electrical and mechanical considerations affecting the use of radial backwall vanes are also detailed. Major design details and performance capabilities of a 1 kW, 2 to 7 GHz, high power pulse TWT are presented asan example of the use of radial vane loading.
Keywords :
microwave tubes; travelling wave tubes; dielectric cross-sectional profiles; electrical considerations; frequency 2 GHz to 7 GHz; frequency 8 GHz to 18 GHz; harmonic separation; helix TWT performance improvement; mechanical considerations; power 1 kW; power pulse TWT; radial backwall vanes; velocity dispersion shaping; Abstracts; Cities and towns; Surges;
Conference_Titel :
Electron Devices Meeting (IEDM), 1974 International
Conference_Location :
Washington, DC
DOI :
10.1109/IEDM.1974.6219799
