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.
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In recent experiments, a scale model PASOTRON was operated as a backward-wave oscillator in C-band.
A sampling of RF jammers
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 1990 Microwave Power Tube Conference
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.
Innovative circuit arrangements and device designs provide high performance RF and mm-wave sources for military applications
Backward-wave oscillators that use biplanar interdigital slow wave circuits are reported to give 23.8 mW near 0.650 THz [26].
Advances in terahertz technology with emphasis on quantum cascade lasers/ Kvantiniu-pakopiniu lazeriu naudojimas terahercinems technologijoms tobulinti

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