Frequency multiplied harmonic gyrotron-traveling-wave-tube amplifier

Journal Article · Wed Jun 01 00:00:00 EDT 1994 · Physics of Plasmas; (United States)

DOI:https://doi.org/10.1063/1.870600· OSTI ID:7270447

Choi, J J; Ganguly, A K; Armstrong, C M ^[1]

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1. Naval Research Laboratory, Vacuum Electronics Branch, Washington, DC 20375 (United States)

Numerical simulations of a [ital W]-band two-stage tapered, frequency multiplied gyrotron- traveling-wave-tube amplifier are reported. Unlike conventional harmonic gyrodevices, a drive signal at the fundamental harmonic frequency is injected in the first stage for beam modulation, and amplified output radiation is extracted from the third harmonic cyclotron resonance interaction. Numerical results show that broadband millimeter wave radiation is obtained with an efficiency of 10%--15%, a gain of [similar to]30 dB, and an instantaneous bandwidth of [similar to]10% at a center frequency of 95 GHz for [Delta][ital v][sub [ital z]]/[ital v][sub [ital z]]=2%.

• OSTI ID: 7270447
• Journal Information: Physics of Plasmas; (United States), Journal Name: Physics of Plasmas; (United States) Vol. 1:6; ISSN PHPAEN; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700310* -- Plasma Confinement-- (1992-)
700330 -- Plasma Kinetics
Transport
& Impurities-- (1992-)
700340 -- Plasma Waves
Oscillations
& Instabilities-- (1992-)
CHARGED PARTICLES
COLLISIONS
CONFINEMENT
ELECTRONS
ELEMENTARY PARTICLES
ENERGY TRANSFER
FERMIONS
INSTABILITY
IONS
LEPTONS
PARAMETRIC INSTABILITIES
PERTURBATION THEORY
PLASMA CONFINEMENT
PLASMA INSTABILITY
PLASMA MACROINSTABILITIES
STOCHASTIC PROCESSES
TRAPPED-PARTICLE INSTABILITY