Title :
High CW power with multi-octave bandwidth from power-combined mini-TWTs
Author :
Mallavarpu, R. ; Puri, M.P.
Author_Institution :
Raytheon Co., Waltham, MA, USA
Abstract :
Several mini-TWTs (traveling-wave tubes) were recently power-combined in the band 2.0 to 8.0 GHz to achieve 250 W of continuous-wave (CW) power at better than 90% combining efficiency. Graceful degradation was demonstrated by successively turning off each of the TWTs. The combining device, known as the spatial field power combiner, is especially suited for high-average-power applications. This approach has the potential for achieving CW powers in excess of 1 kW over multioctave frequency bands up to 20 GHz. This work focuses on a four-way combiner, and the results obtained in combining mini-TWTs are discussed.<>
Keywords :
travelling-wave-tubes; waveguide components; 2 to 8 GHz; 250 W; 90 percent; SHF; combining device; four-way combiner; graceful degradation; high CW power; high-average-power applications; multi-octave bandwidth; multioctave frequency bands; power-combined mini-TWTs; spatial field power combiner; traveling-wave tubes; Bandwidth; Coaxial components; Degradation; FETs; Frequency; Gallium arsenide; Impedance; Power combiners; Power transmission lines; Solid state circuits;
Conference_Titel :
Microwave Symposium Digest, 1990., IEEE MTT-S International
Conference_Location :
Dallas, TX
DOI :
10.1109/MWSYM.1990.99825
