Nonlinear Matched Reflection Mode Bandstop Filters for Frequency Selective Limiting Applications

This paper presents the design of frequency-selective limiting circuits based on nonlinear matched reflection-mode bandstop resonators. This type of frequency selective limiters achieve fast switching, high-level of power limiting, and flexible channel bandwidth. Initial measured results of a first-...

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Bibliographic Details
Published in2007 IEEE/MTT-S International Microwave Symposium pp. 1043 - 1046
Main Authors Phudpong, P., Hunter, I.C.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.06.2007
Subjects
Attenuation
Bandstop filters
Bandwidth
Dynamic range
Ferrites
Frequency
limiting
Matched filters
microstrip resonators
Microwave circuits
microwave limiters
nonlinear filters
Reflection
Resonator filters
Schottky diodes
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Summary:This paper presents the design of frequency-selective limiting circuits based on nonlinear matched reflection-mode bandstop resonators. This type of frequency selective limiters achieve fast switching, high-level of power limiting, and flexible channel bandwidth. Initial measured results of a first-order device indicate 0 dBm limiting threshold, 32 dB limiting level, 2 dB insertion loss, and 200 MHz limiting bandwidth. A third degree device is also presented. Simulated results show an excellent highly selective bandstop performance at high powers with a near all-pass response at low signal powers. This is the first time such a multi-pole matched frequency selective limiter has been reported.
ISBN:1424406870
9781424406876
ISSN:0149-645X
2576-7216
DOI:10.1109/MWSYM.2007.380236