Title :
Testing of a 0.850 THz vacuum electronic power amplifier
Author :
Tucek, Jack C. ; Basten, Mark A. ; Gallagher, David A. ; Kreischer, Kenneth E.
Author_Institution :
Electron. Syst., Northrop Grumman Corp., Rolling Meadows, IL, USA
Abstract :
A 0.850 THz vacuum electronic power amplifier capable of >50 mIV output power is being tested at Northrop Grumman Electronic Systems. The compact power amplifier is based on a DRIE-fabricated folded waveguide slow-wave circuit, together with a high current density thermionic cathode, a high field permanent magnet solenoid, and a single-stage depressed collector for overall device efficiency. The new 0.850 THz power amplifier design is based on a 0.670 THz source that achieved over 100 mIV of output power with 21.5 dB of saturated gain, 15 GHz of operational bandwidth, a collector efficiency of 93% and an overall device efficiency of 0.44%.
Keywords :
power amplifiers; DRIE fabricated folded waveguide slow wave circuit; Northrop Grumman electronic system; compact power amplifier; device efficiency; high current density thermionic cathode; high field permanent magnet solenoid; vacuum electronic power amplifier design; Bandwidth; Gain; Permanent magnets; Power amplifiers; Power generation; Solenoids; Testing; Terahertz; high-resolution imaging; submillimeter wave; vacuum electronics;
Conference_Titel :
Vacuum Electronics Conference (IVEC), 2013 IEEE 14th International
Conference_Location :
Paris
Print_ISBN :
978-1-4673-5976-4
DOI :
10.1109/IVEC.2013.6571144
