DocumentCode :
182268
Title :
Demonstration of a wideband 10-kW Ka-band sheet beam TWT amplifier
Author :
Pershing, Dean ; Nguyen, Khanh ; Abe, David K. ; Wright, Edward ; Larsen, Per ; Pasour, John ; Cooke, Simon ; Balkcum, Adam ; Wood, Frank ; Myers, Robert ; Levush, Baruch
Author_Institution :
Beam-Wave Res., Inc., Bethesda, MD, USA
fYear :
2014
fDate :
22-24 April 2014
Firstpage :
121
Lastpage :
122
Abstract :
A sheet-beam coupled-cavity traveling wave tube has produced over 10 kW of peak power at a center frequency of 34 GHz, with a 3-dB bandwidth of almost 5 GHz. The power of this amplifier is an order of magnitude higher than state-of-the-art conventional amplifiers of comparable frequency, bandwidth, and operating voltage (<;20 kV). This unprecedented performance is made possible by a unique, NRL-developed sheet electron beam along with a novel slow-wave interaction structure. High-current, low-voltage operation provides high gain per unit length and allows an interaction structure <; 5-cm long to be used to achieve the desired gain of 15 dB at saturation. Measured performance agrees well with 3-D particle-in-cell simulations.
Keywords :
microwave amplifiers; microwave tubes; slow wave structures; wideband amplifiers; 3D particle-in-cell simulations; frequency 34 GHz; frequency 5 GHz; gain 15 dB; power 10 kW; sheet electron beam; slow-wave interaction structure; traveling wave tube; voltage 20 kV; wideband Ka-band sheet beam TWT amplifier; Bandwidth; Electron beams; Gain; Oscillators; Power amplifiers; Power generation; Solid modeling; Amplifier; TWT; coupled-cavity; millimeter wave; sheet beam; vacuum electronics;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Vacuum Electronics Conference, IEEE International
Conference_Location :
Monterey, CA
Type :
conf
DOI :
10.1109/IVEC.2014.6857519
Filename :
6857519
Link To Document :
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