Transit time isolation of a high power microwave amplifier

We report experimental results from a high power X-band traveling wave tube amplifier designed to eliminate sidebands due to reflections from its output. The amplifier has a very low energy velocity, such that the time it takes a wave to be reflected from the output to the input is of the order of,...

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Bibliographic Details
Published in:Physical review letters 1993-10, Vol.71 (16), p.2666-2669
Main Authors: KUANG, E, DAVIS, T. J, KERSLICK, G, NATION, J. A, SCHÄCHTER, L
Format: Article
Language:English
Subjects:
AMPLIFIERS
Applied sciences
Circuit properties
DESIGN
DISPERSION RELATIONS
Electric, optical and optoelectronic circuits
ELECTRON TUBES
ELECTRONIC EQUIPMENT
Electronics
Exact sciences and technology
FOURIER ANALYSIS
MICROWAVE AMPLIFIERS
Microwave circuits, microwave integrated circuits, microwave transmission lines, submillimeter wave circuits
MICROWAVE EQUIPMENT
MICROWAVE TUBES 440800 > Miscellaneous Instrumentation-- (1990-)
OPERATION
OTHER INSTRUMENTATION
POWER
PULSES
REFLECTION
SIGNALS
SPECTRAL RESPONSE
TRAVELLING WAVE TUBES
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Description
Summary:We report experimental results from a high power X-band traveling wave tube amplifier designed to eliminate sidebands due to reflections from its output. The amplifier has a very low energy velocity, such that the time it takes a wave to be reflected from the output to the input is of the order of, or greater than, the electron beam pulse duration. The bandwidth of the output spectrum is limited by the very narrow passband of the periodic structure. The amplifier has been operated at power levels of up to 160 MW at 9 GHz for pulse durations of 50 ns. (Author)
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.71.2666