Journal ArticleDOI
Analysis of Fast Wave Couplers for Transverse Field Beam Type Parametric Amplifiers
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TLDR
In this paper, a traveling-wave coupler for fast wave excitation only of a transverse field parameter beam amplifier is analyzed, and it is shown that a dip condition can be achieved, insuring almost complete transfer of the fast wave beam noise to the circuit and of the circuit signal power to the fast beam wave.Abstract:
A traveling-wave coupler for fast wave excitation only of a transverse field parameter beam amplifier is analyzed. The analysis indicates that, as expected, "a dip condition" for a transverse field tube can be achieved, insuring almost complete transfer of the fast wave beam noise to the circuit and of the circuit signal power to the fast beam wave. This requires that the slow and fast beam waves be sufficiently separated in velocity (i.e., the cyclotron frequency be high enough), that the circuit wave be in close synchronism with the fast beam wave, and that the coupling between the circuit and the beam be loose. (auth)read more
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Book ChapterDOI
Multiple Controlled-Reactance Parametric Circuits
TL;DR: The down-converter with resistive image-termination allows for low-noise conversion gain with positive input and output resistance, if the frequency ratio fin/fout is in the order of the diode dynamic quality factor q = | γs | Q(fin) these merits being lost for conversion ratios which are either a little above unity or very much in excess of q as mentioned in this paper.
References
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Journal ArticleDOI
Traveling-wave tubes
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.
Journal ArticleDOI
Fast Wave Couplers for Longitudinal Beam Parametric Amplifiers
TL;DR: The theory and design for fast wave helix couplers for use with longitudinal beam parametric amplifiers are given in this paper, and a matrix formulation of these equations is used to point out a formal mathematical analogue of the Schrodinger equation of quantum mechanics.
Journal ArticleDOI
Noise in Transverse‐Field Traveling‐Wave Tubes
G. Wade,K. Amo,D. A. Watkins +2 more
TL;DR: In this paper, the authors derived an expression for the noise figure of a transverse field amplifier with a collimator and showed that the use of such an amplifier is required to give low noise figures.
Journal ArticleDOI
A Three-Frequency Electron Beam Parametric Amplifier and Frequency Converter†
TL;DR: In this article, the principle of varying a circuit reactance to produce gain is applied to an electron beam, where the beam is modulated by an r.f. wave at frequency ω and this supplies energy to a signal at frequency ε and an idler at frequency ǫ which is generated in the beam.