Title :
Status of a 35 GHz sixth-harmonic amplifier experiment
Author :
Velazco, J.E. ; Ceperley, P.H. ; Menz, D.M.
Author_Institution :
Microwave Technol. Inc., Fairfax, VA, USA
Abstract :
Summary form only given. We report on the status of a very compact, high efficiency harmonic amplifier (HARA) prototype experiment. In this experiment, a 6 kV 200 mA pencil electron beam undergoes circular scanning-modulation inside a short microwave resonator operating in circular polarization at 5.85 GHz. A 35 GHz output cavity operating at the 6th harmonic of the drive frequency is employed to efficiently extract energy from the modulated beam. This device is expected to deliver hundreds of watts of output power at 35 GHz with /spl sim/50% efficiency. We will present cold-test results of the output cavity as well as experimental results of the beam-wave interactions along the entire HARA circuit. The HARA is /spl sim/3-inches long and does not require a beam focusing system. This makes for a very compact and lightweight system which is well suited to applications where size, weight and efficiency are critical.
Keywords :
focusing; microwave power amplifiers; polarisation; resonators; 200 mA; 3 in; 35 GHz; 5.85 GHz; 50 percent; 6 kV; 6th harmonic; beam-wave interactions; circular polarization; circular scanning modulation; drive frequency; energy; high efficiency harmonic amplifier; modulated beam; output cavity; pencil electron beam; short microwave resonator; sixth-harmonic amplifier experiment; Circuits; Electron beams; Frequency; Microwave amplifiers; Microwave devices; Microwave technology; Optical modulation; Polarization; Power generation; Prototypes;
Conference_Titel :
Plasma Science, 2000. ICOPS 2000. IEEE Conference Record - Abstracts. The 27th IEEE International Conference on
Conference_Location :
New Orleans, LA, USA
Print_ISBN :
0-7803-5982-8
DOI :
10.1109/PLASMA.2000.854896
