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Coupled-Cavity Traveling-Wave Parametric Amplifiers: Part I -- Analysis

Currie, M. R. and Gould, R. W. (1960) Coupled-Cavity Traveling-Wave Parametric Amplifiers: Part I -- Analysis. Proceedings of the IRE, 48 (12). pp. 1960-1973. ISSN 0096-8390. doi:10.1109/JRPROC.1960.287564.

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A general class of traveling-wave parametric amplifiers based on coupled-cavity filter circuits is described. This type of amplifier is particularly suited to microwave frequencies and incorporates new features that overcome some severe difficulties associated with other circuit structures. Traveling-wave diode-type amplifiers having relatively wide bandwidths and great simplicity at S band have already resulted from this approach (details of experiments will be described in Part II). An analysis is presented which provides detailed information on operating characteristics, including the effects of terminal impedances, reflected waves, circuit loss, etc., and also leads to a simple physical picture of the cumulative interaction mechanism in terms of coupled-mode concepts. This physical picture is emphasized throughout this paper. Gain bandwidth considerations are discussed in terms of a fundamental "interaction-impedance" parameter. Representative calculated curves show that unilateral gains of 12 to 15 db over relatively wide bandwidths are attainable with as few as 4 to 6 diodes. Methods of increasing the gain through use of ferrites and special circuit techniques are proposed.

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Additional Information:© Copyright 1960 IEEE. Reprinted with permission. Received by the IRE, May 3, 1960; revised manuscript received, August 19, 1960. This work was presented at the Seventeenth Annual Conf. on Electron Device Res., Mexico City, Mexico; June, 1959. The authors gratefully acknowledge many fruitful discussions with R.D. Weglein and K.P. Grabowski of the Electron Dynamics Department, who contributed greatly to this investigation and carried out the associated experimental program. Thanks are also due B. Fik, who carried out the programming and numerical calculations on an IBM 704 digital computer.
Issue or Number:12
Record Number:CaltechAUTHORS:CURprocire60
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:9816
Deposited By: Archive Administrator
Deposited On:19 Mar 2008
Last Modified:08 Nov 2021 21:02

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