Influence of Non-Ideal Circulator Effects on Negative-Resistance Amplifier Design

Influence of Non-Ideal Circulator Effects on Negative-Resistance Amplifier Design

It is well known that the non-ideal properties of a circulator (non-unity VSWR, non-zero insertion loss, finite isolation) have a marked effect on the design of single-stage and multi-stage negative-resistance amplifiers. These effects are due to the frequency dependence of the circulator parameters...

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Bibliographic Details
Published in:1980 IEEE MTT-S International Microwave symposium Digest pp. 174 - 176
Main Authors: Bates, B.D., Khan, P.J.
Format: Conference Proceeding
Language:English
Published: 1980
Online Access:Get full text
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Summary:It is well known that the non-ideal properties of a circulator (non-unity VSWR, non-zero insertion loss, finite isolation) have a marked effect on the design of single-stage and multi-stage negative-resistance amplifiers. These effects are due to the frequency dependence of the circulator parameters, the feedback associated with multiple reflections between circulator ports and terminations, and the possibility of spurious pass-bands in the circulator characteristics away from the desired operating frequency range. Noise degradation also occurs with a low-noise amplifier circuit.
DOI:10.1109/MWSYM.1980.1124222