Title :
Development of a high average power W-band TWT
Author :
Theiss, Alan J. ; Meadows, Clark J. ; Montgomery, Keith L. ; Martin, Michael
Author_Institution :
Electron Devices, L-3 Commun., San Carlos, CA
Abstract :
A first-unit full-gain W-Band folded-waveguide TWT has been rebuilt and is scheduled for hot test. This light-weight integral pole piece TWT is expected to achieve high average power by utilizing multiple L-3 proprietary features: a PPM-type, folded-waveguide circuit that has close-proximity copper-block heat-sinks [1]; a broadband block-type RF window that demonstrated 1500 watts of average-power transmission with a 33% bandwidth match at Ka- band [1]; a tetrode gun that provides high-PRF modulation to diode-gun-quality electron beams [2] [3]; and voided iron parts that permit pole pieces with thicknesses that exceed an RF period to supply focusing fields with lambdaP/L values around 10 for 4-kilowatt beams [4].
Keywords :
electron beams; heat sinks; travelling wave tubes; waveguides; broadband block-type RF window; close-proximity; copper-block heat-sinks; diode-gun-quality; electron beams; folded-waveguide circuit; high average power; high-PRF modulation; multiple L-3 proprietary; power W-band TWT; Assembly; Circuit testing; Communication industry; Electron beams; Electron devices; Fabrication; Job shop scheduling; Radio frequency; Voltage; Welding;
Conference_Titel :
Vacuum Electronics Conference, 2008. IVEC 2008. IEEE International
Conference_Location :
Monterey, CA
Print_ISBN :
978-1-4244-1715-5
DOI :
10.1109/IVELEC.2008.4556335
