Topic
Traveling-wave tube
About: Traveling-wave tube is a research topic. Over the lifetime, 3607 publications have been published within this topic receiving 25913 citations. The topic is also known as: TWT & traveling-wave tube amplifier.
Papers published on a yearly basis
Papers
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TL;DR: In this paper, the power output of a traveling-wave tube has been analyzed using a linearized theory only, and no attempt has been made to develop a non-linear theory.
Abstract: A Theoretical Evaluation of the power output of a traveling-wave tube requires a theory of the non-linear behavior of the tube. In this book we have dealt with a linearized theory only. No attempt will be made to develop a non-linear theory. Some results of non-linear theory will be quoted, and some conclusions drawn from experimental work will be presented.
546 citations
Book•
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01 Dec 1994
TL;DR: In this article, the authors considered the effect of magnetic field on electron motion in static electric fields and showed that the magnetic field can influence electron motion and distortion breakdown and protection reliability.
Abstract: Static fields produced by electrons electron motion in static electric fields influence of magnetic field on electron motion cathodes electron guns electron beams beam-gap interactions electron bunching theory of travelling-wave interaction wave velocities and dispersion helix TWTs coupled cavity TWTs depressed collectors noise nonlinearities and distortion breakdown and protection reliability.
388 citations
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TL;DR: In this article, an electron beam traveling with about 1/13 the speed of light is shot through a helical transmission line with about the same velocity of propagation, and the gain was achieved over a bandwidth 800 megacycles between 3-decibel points.
Abstract: Very-broad-band amplification can be achieved by use of a traveling-wave type of circuit rather than the resonant circuit commonly employed in amplifiers. An amplifier has been built in which an electron beam traveling with about 1/13 the speed of light is shot through a helical transmission line with about the same velocity of propagation. Amplification was obtained over a bandwidth 800 megacycles between 3-decibel points. The gain was 23 decibels at a center-band frequency of 3600 megacycles.
300 citations
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05 Jun 2003
TL;DR: In this paper, the authors present feasibility studies of an oscillator concept using an amplifier with delayed feedback, and experimental evaluation of the concept at 50 GHz is presented, where the results of the experiment are in good agreement with the simulations.
Abstract: Microfabricated folded waveguide traveling-wave tubes (TWTs) are potential compact sources of wide-band, high-power terahertz radiation. We present feasibility studies of an oscillator concept using an amplifier with delayed feedback. Simulations of a 560-GHz oscillator and experimental evaluation of the concept at 50 GHz are presented. Additionally, results from various fabrication methods that are under investigation, such as X-ray lithography, electroforming, and molding (LIGA), UV LIGA, and deep reactive ion etching are presented. Observations and measurements are reported on the generation of stable single-frequency oscillation states. On varying the feedback level, the oscillation changes from a stable single-frequency state at the threshold to multifrequency spectra in the overdriven state. Simulation and experimental results on amplifier characterization and dynamics of the regenerative TWT oscillator include spectral evolution and phase stability of the generated frequencies. The results of the experiment are in good agreement with the simulations.
262 citations