Nonlinear analysis and design of frequency selective limiters based on parametric circuits

Document Type

Conference Proceeding

Publication Date

12-12-2008

Abstract

A parametric circuit based on varactor-diodes is presented for its application as a frequency-selective limiter. A simplified analytical model is initially derived for a general understanding of the circuit performance. The power limitation is due to the frequency division of above threshold signals, leading to a reduction of the output power. Next harmonic-balance simulation is applied to analyze the limiter behavior in the presence of a strong and a weak signal. A matching technique is derived to increase the input-power range with high limitation level. Cascaded detuned stages are used to limit multiple above threshold signals. An in-depth analysis of the behavior under two interferers is also presented, showing that each stage enables the frequency division of a different interferer. The techniques have been successfully applied to a frequency selective limiter in the 850 MHz band. © 2008 IEEE.

Identifier

57349197086 (Scopus)

ISBN

[9781424417810]

Publication Title

IEEE MTT S International Microwave Symposium Digest

External Full Text Location

https://doi.org/10.1109/MWSYM.2008.4632990

ISSN

0149645X

First Page

947

Last Page

950

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