Backward-wave oscillator - Wikipedia
网页A backward wave oscillator (BWO), also called carcinotron or backward wave tube, is a vacuum tube that is used to generate microwaves up to the terahertz range. Belonging to the traveling-wave tube family, it is an oscillator with a wide electronic tuning range.
Backward wave optical parametric oscillation in a waveguide
网页2 天之前 · The backward wave has a narrow linewidth of 21 GHz at 1514.6 nm, while the forward wave at 1688.7 nm has a broadband spectrum replicating that of the pump. A conversion efficiency of 8.4% was ...
Backward Wave Oscillator - Electronics Desk
网页It is a special type of vacuum tube used to produce microwave signals in the range of terahertz (THz). Backward wave oscillator belongs to the group of Travelling Wave Tubes that generates oscillations at microwave frequencies.
Backward Wave - an overview | ScienceDirect Topics
网页A Backward Wave refers to a type of oscillator that utilizes the interaction of an electron stream with a radio-frequency-circuit wave, where the direction of energy flow is opposite to the direction of electron motion. It is a member of the traveling-wave-tube family and can operate as an oscillator or an amplifier.
Backward-Wave Oscillators | IEEE Journals & Magazine - IEEE …
网页2007年1月15日 · Abstract: The Pierce traveling-wave tube theory is modified to apply to the backward-wave oscillator. Theoretical dependence of both starting current and frequency upon space charge and circuit loss is calculated, as is the dependence of efficiency upon these parameters.
Forward and backward waves: Three definitions and their interrelation ...
网页2007年10月18日 · A wave is considered a forward (backward) wave if the group velocity, as indicated by the slope of the dispersion curve, is in the same (opposite) direction as the phase velocity [54]. The...
Continuous-wave Y-band planar BWO with wide tunable …
网页2018年1月10日 · A high performance continuous-wave (CW) backward wave oscillator (BWO) with planar slow wave structure (SWS) and sheet electron beam in Y-band is presented in this paper.
Tunable Backward Terahertz-wave Parametric Oscillation
网页2019年1月24日 · The tunability of backward terahertz-wave parametric oscillation is investigated using a quasi-collinear phase-matching model and its frequency range from the sub-terahertz to terahertz region is...
Research on 1.0-THz Graphene-Coated Staggered Double-Grating Backward …
网页A backward wave oscillator (BWO) is a type of terahertz (THz) radiation sources, which can produce the signal of high power and high frequency. BWO has the characteristics of high power, tunable frequency, and small size, which is widely used in communication, radar, imaging, and other fields. However, in the 1-THz frequency band, BWO is ...
Design and simulation of a high efficiency relativistic backward wave ...
网页An X-band overmoded Relativistic Backward Wave Oscillator (RBWO) with non-uniform Slow Wave Structure (SWS) and Resonant Reflector (RR) is designed to increase the beam-wave interaction efficiency of RF and slow space charge wave.
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