Tunable high quality-factor absorptive bandstop filter design

Trevor Snow, Ju Seop Lee, William J. Chappell

Research output: Chapter in Book/Report/Conference proceedingConference contribution

31 Citations (Scopus)

Abstract

A two-pole, substrate-integrated, high quality(Q)-factor absorptive bandstop filter is demonstrated that exhibits enhanced selectivity over traditional reflective bandstop filter designs and higher Q-factor components than previous absorptive designs. With a Q-factor of 729, the presented filter has a peak isolation of 30 dB, a narrow 10-dB rejection bandwidth of 3.9 MHz that is tunable over 3.4-3.8 GHz, and an out-ofband insertion loss of 0.3 dB, exhibiting the same attenuation of a standard two-pole reflective notch filter with a Q-factor of 3100. These features enable channel-select isolation of high power interfering signals from closely separated receive bands without impacting receiver noise figure.

Original languageEnglish
Title of host publicationIEEE MTT-S International Microwave Symposium Digest
DOIs
Publication statusPublished - 2012 Oct 3
Externally publishedYes
Event2012 IEEE MTT-S International Microwave Symposium, IMS 2012 - Montreal, QC, Canada
Duration: 2012 Jun 172012 Jun 22

Other

Other2012 IEEE MTT-S International Microwave Symposium, IMS 2012
CountryCanada
CityMontreal, QC
Period12/6/1712/6/22

Fingerprint

bandstop filters
Notch filters
Q factors
Poles
Noise figure
Insertion losses
isolation
poles
filters
Bandwidth
notches
insertion loss
rejection
Substrates
receivers
selectivity
attenuation
bandwidth

Keywords

  • Cavity resonators
  • Filters
  • Microwave filters
  • Piezoelectric actuators
  • Tunable circuits

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Radiation
  • Condensed Matter Physics

Cite this

Snow, T., Lee, J. S., & Chappell, W. J. (2012). Tunable high quality-factor absorptive bandstop filter design. In IEEE MTT-S International Microwave Symposium Digest [6259759] https://doi.org/10.1109/MWSYM.2012.6259759

Tunable high quality-factor absorptive bandstop filter design. / Snow, Trevor; Lee, Ju Seop; Chappell, William J.

IEEE MTT-S International Microwave Symposium Digest. 2012. 6259759.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Snow, T, Lee, JS & Chappell, WJ 2012, Tunable high quality-factor absorptive bandstop filter design. in IEEE MTT-S International Microwave Symposium Digest., 6259759, 2012 IEEE MTT-S International Microwave Symposium, IMS 2012, Montreal, QC, Canada, 12/6/17. https://doi.org/10.1109/MWSYM.2012.6259759
Snow T, Lee JS, Chappell WJ. Tunable high quality-factor absorptive bandstop filter design. In IEEE MTT-S International Microwave Symposium Digest. 2012. 6259759 https://doi.org/10.1109/MWSYM.2012.6259759
Snow, Trevor ; Lee, Ju Seop ; Chappell, William J. / Tunable high quality-factor absorptive bandstop filter design. IEEE MTT-S International Microwave Symposium Digest. 2012.
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