backward-wave oscillator


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backward-wave oscillator

[′bak·wərd ‚wāv ′äs·ə‚lād·ər]
(electronics)
An electronic device which amplifies microwave signals simultaneously over a wide band of frequencies and in which the traveling wave produced is reflected backward so as to sustain the wave oscillations. Abbreviated BWO. Also known as carcinotron.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
In recent experiments, a scale model PASOTRON was operated as a backward-wave oscillator in C-band.
Stankiewicz, Heinen, Ebihara and Dayton, of NASA, Lewis; Barnett, of Analex Corp; Geis and Efremow, of MIT, Lincoln Lab; and Grow, of the University of Utah, summarized work on a novel backward-wave oscillator. Oscillations have been observed at 311 GHz with voltage tunability of more than an octave.
Sprehn, Rettig, Peebles and Luhmann, of UCLA, described experiments in phase locking a 280 GHz backward-wave oscillator and a 140 GHz reflex klystron to a 35 GHz reference.
The inital experimental results produced an 800 GHz signal as the second-harmonic frequency of the backward-wave oscillator. A 200 to 250 GHz version was designed and built (Figure 4) using aluminum metalization for crystalline quartz with no etching of the quartz.
Backward-wave oscillators that use biplanar interdigital slow wave circuits are reported to give 23.8 mW near 0.650 THz [26].