Frequency-agile bandstop filter with tunable attenuation

A frequency-agile bandstop filter technology with tunable stopband attenuation and constant absolute bandwidth is described. The technology is demonstrated by a six-resonator planar microstrip filter with simultaneous varactor-diode tuning of stopband attenuation from 30 dB to 50 dB and of operating...

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Bibliographic Details
Published in2009 IEEE MTT-S International Microwave Symposium Digest pp. 649 - 652
Main Authors Jachowski, D.R., Rauscher, C.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.06.2009
Subjects
Admittance
Attenuation
Bandwidth
Circuit optimization
Frequency
Microwave filters
Microwave technology
Resonator filters
Tunable circuits and devices
Tuning
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ISBN1424428033
9781424428038
ISSN0149-645X
DOI10.1109/MWSYM.2009.5165780

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Summary:A frequency-agile bandstop filter technology with tunable stopband attenuation and constant absolute bandwidth is described. The technology is demonstrated by a six-resonator planar microstrip filter with simultaneous varactor-diode tuning of stopband attenuation from 30 dB to 50 dB and of operating frequency from 1.8 GHz to 2.2 GHz, with a stopband bandwidth of 60 MHz and absolute 3 dB bandwidth of less than 390 MHz.
ISBN:1424428033
9781424428038
ISSN:0149-645X
DOI:10.1109/MWSYM.2009.5165780