Octave tunable lumped-element notch filter with resonator-Q-independent zero reflection coefficient

Tsung Chieh Lee; Ju Seop Lee; Eric J. Naglich; Dimitrios Peroulis

doi:10.1109/MWSYM.2014.6848573

Octave tunable lumped-element notch filter with resonator-Q-independent zero reflection coefficient

Tsung Chieh Lee, Ju Seop Lee, Eric J. Naglich, Dimitrios Peroulis

Division of Computer and Communication Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

19 Citations (Scopus)

Abstract

A bandstop filter architecture with small form factor and very large attenuation over an octave frequency tuning range is demonstrated. The architecture provides a benefit of resonator-Q-independent zero reflection coefficient at the center frequency, and is demonstrated with a tuning range of 55.04 to 133.34 MHz varactor-tuned two-resonator notch filter with minimum notch attenuation of 64 dB, 3-dB fractional bandwidth (FBW) of 10.86% to 3.22% over the tunable frequency range and passband up to 356.5 MHz, resulting in a 6.48-to-1 upper passband, in a footprint of 2.27×1.65 cm². The unloaded quality factor (Q-factor) was extracted to be 62 at 133.34 MHz.

Original language	English
Title of host publication	IEEE MTT-S International Microwave Symposium Digest
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Print)	9781479938698
DOIs	https://doi.org/10.1109/MWSYM.2014.6848573
Publication status	Published - 2014 Jan 1
Event	2014 IEEE MTT-S International Microwave Symposium, IMS 2014 - Tampa, FL, United States Duration: 2014 Jun 1 → 2014 Jun 6

Other

Other	2014 IEEE MTT-S International Microwave Symposium, IMS 2014
Country	United States
City	Tampa, FL
Period	14/6/1 → 14/6/6

ASJC Scopus subject areas

Electrical and Electronic Engineering
Radiation
Condensed Matter Physics

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Octave tunable lumped-element notch filter with resonator-Q-independent zero reflection coefficient. / Lee, Tsung Chieh; Lee, Ju Seop; Naglich, Eric J.; Peroulis, Dimitrios.

IEEE MTT-S International Microwave Symposium Digest. Institute of Electrical and Electronics Engineers Inc., 2014. 6848573.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Lee, TC, Lee, JS, Naglich, EJ & Peroulis, D 2014, Octave tunable lumped-element notch filter with resonator-Q-independent zero reflection coefficient. in IEEE MTT-S International Microwave Symposium Digest., 6848573, Institute of Electrical and Electronics Engineers Inc., 2014 IEEE MTT-S International Microwave Symposium, IMS 2014, Tampa, FL, United States, 14/6/1. https://doi.org/10.1109/MWSYM.2014.6848573

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abstract = "A bandstop filter architecture with small form factor and very large attenuation over an octave frequency tuning range is demonstrated. The architecture provides a benefit of resonator-Q-independent zero reflection coefficient at the center frequency, and is demonstrated with a tuning range of 55.04 to 133.34 MHz varactor-tuned two-resonator notch filter with minimum notch attenuation of 64 dB, 3-dB fractional bandwidth (FBW) of 10.86% to 3.22% over the tunable frequency range and passband up to 356.5 MHz, resulting in a 6.48-to-1 upper passband, in a footprint of 2.27×1.65 cm2. The unloaded quality factor (Q-factor) was extracted to be 62 at 133.34 MHz.",

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AB - A bandstop filter architecture with small form factor and very large attenuation over an octave frequency tuning range is demonstrated. The architecture provides a benefit of resonator-Q-independent zero reflection coefficient at the center frequency, and is demonstrated with a tuning range of 55.04 to 133.34 MHz varactor-tuned two-resonator notch filter with minimum notch attenuation of 64 dB, 3-dB fractional bandwidth (FBW) of 10.86% to 3.22% over the tunable frequency range and passband up to 356.5 MHz, resulting in a 6.48-to-1 upper passband, in a footprint of 2.27×1.65 cm2. The unloaded quality factor (Q-factor) was extracted to be 62 at 133.34 MHz.

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