Operation of a Highly Overmoded, Harmonic-Multiplying, Wideband Gyrotron Amplifier

Journal Article · Tue Jul 01 00:00:00 EDT 1997 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.79.515· OSTI ID:527041

Guo, H; Chen, S H; Granatstein, V L; Rodgers, J; Nusinovich, G; Walter, M; Levush, B; Chen, W J ^[1]

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1. Institute for Plasma Research, University of Maryland at College Park, College Park, Maryland 20742 (United States)

Experiments on a unique, high-power, millimeter wave amplifier (a phase-coherent, harmonic-multiplying, inverted gyrotwystron) are reported. Superior stability resulted from two factors: (1) interaction between a relatively low order waveguide mode (TE{sub 22} ) and the beam wave at the fundamental cyclotron frequency in the input section, and (2) an internal mode filter in the highly overmoded (TE{sub 42} ) , second harmonic output cavity. Bandwidth was 1.3{percent} with peak gain of 33dB around 31.8GHz. The gain-bandwidth performance is a significant advance for gyrotron amplifiers operating in such high order modes. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 527041
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 3 Vol. 79; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
GAIN
GHZ RANGE
HARMONICS
HIGH FREQUENCY AMPLIFIERS
KLYSTRONS
MICROWAVE AMPLIFIERS
OPERATION
RADAR
TRAVELLING WAVE TUBES