Acoustic wave resonator-based absorptive bandstop filters with ultra-narrow bandwidth

Dimitra Psychogiou; Roberto Gómez-García; Dimitrios Peroulis

doi:10.1109/LMWC.2015.2451357

Acoustic wave resonator-based absorptive bandstop filters with ultra-narrow bandwidth

Dimitra Psychogiou
, Roberto Gómez-García
, Dimitrios Peroulis

Research output: Contribution to journal › Article › peer-review

Abstract

Ultra-narrowband absorptive bandstop filters (ABSFs) are presented in this letter. They are based on a hybrid RF-design approach in which high-unloaded quality-factor (Q) acoustic wave (AW) resonators and low-Q lumped-element components are effectively combined to create narrow (< 0.1%) fractional-bandwidth (FBW) stopbands that exhibit theoretically infinite attenuation and effective quality factor (Q_eff) of the order of a thousand. The proposed ABSF design approach is experimentally validated with two manufactured prototypes at 418 MHz that consist of commercially-available surface acoustic wave (SAW) resonators and surface mounted devices (SMDs). Measured FBWs as narrow as 0.02% that correspond to a Q_eff of 10,000 and maximum stopband isolation of 68 dB validate the conceived ABSF design concept.

Original language	English
Article number	7163370
Pages (from-to)	570-572
Number of pages	3
Journal	IEEE Microwave and Wireless Components Letters
Volume	25
Issue number	9
DOIs	https://doi.org/10.1109/LMWC.2015.2451357
Publication status	Published - 1 Sep 2015
Externally published	Yes

Keywords

Absorptive bandstop filter (ABSF)
acoustic wave (AW) filter
AW resonator
bandstop filter
high-quality-factor (Q) filter
narrowband filter

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10.1109/LMWC.2015.2451357

Cite this

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title = "Acoustic wave resonator-based absorptive bandstop filters with ultra-narrow bandwidth",

abstract = "Ultra-narrowband absorptive bandstop filters (ABSFs) are presented in this letter. They are based on a hybrid RF-design approach in which high-unloaded quality-factor (Q) acoustic wave (AW) resonators and low-Q lumped-element components are effectively combined to create narrow (< 0.1\%) fractional-bandwidth (FBW) stopbands that exhibit theoretically infinite attenuation and effective quality factor (Qeff) of the order of a thousand. The proposed ABSF design approach is experimentally validated with two manufactured prototypes at 418 MHz that consist of commercially-available surface acoustic wave (SAW) resonators and surface mounted devices (SMDs). Measured FBWs as narrow as 0.02\% that correspond to a Qeff of 10,000 and maximum stopband isolation of 68 dB validate the conceived ABSF design concept.",

keywords = "Absorptive bandstop filter (ABSF), acoustic wave (AW) filter, AW resonator, bandstop filter, high-quality-factor (Q) filter, narrowband filter",

author = "Dimitra Psychogiou and Roberto G{\'o}mez-Garc{\'i}a and Dimitrios Peroulis",

note = "Publisher Copyright: {\textcopyright} 2015 IEEE.",

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doi = "10.1109/LMWC.2015.2451357",

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AU - Psychogiou, Dimitra

AU - Gómez-García, Roberto

AU - Peroulis, Dimitrios

PY - 2015/9/1

Y1 - 2015/9/1

N2 - Ultra-narrowband absorptive bandstop filters (ABSFs) are presented in this letter. They are based on a hybrid RF-design approach in which high-unloaded quality-factor (Q) acoustic wave (AW) resonators and low-Q lumped-element components are effectively combined to create narrow (< 0.1%) fractional-bandwidth (FBW) stopbands that exhibit theoretically infinite attenuation and effective quality factor (Qeff) of the order of a thousand. The proposed ABSF design approach is experimentally validated with two manufactured prototypes at 418 MHz that consist of commercially-available surface acoustic wave (SAW) resonators and surface mounted devices (SMDs). Measured FBWs as narrow as 0.02% that correspond to a Qeff of 10,000 and maximum stopband isolation of 68 dB validate the conceived ABSF design concept.

AB - Ultra-narrowband absorptive bandstop filters (ABSFs) are presented in this letter. They are based on a hybrid RF-design approach in which high-unloaded quality-factor (Q) acoustic wave (AW) resonators and low-Q lumped-element components are effectively combined to create narrow (< 0.1%) fractional-bandwidth (FBW) stopbands that exhibit theoretically infinite attenuation and effective quality factor (Qeff) of the order of a thousand. The proposed ABSF design approach is experimentally validated with two manufactured prototypes at 418 MHz that consist of commercially-available surface acoustic wave (SAW) resonators and surface mounted devices (SMDs). Measured FBWs as narrow as 0.02% that correspond to a Qeff of 10,000 and maximum stopband isolation of 68 dB validate the conceived ABSF design concept.

KW - Absorptive bandstop filter (ABSF)

KW - acoustic wave (AW) filter

KW - AW resonator

KW - bandstop filter

KW - high-quality-factor (Q) filter

KW - narrowband filter

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JO - IEEE Microwave and Wireless Components Letters

JF - IEEE Microwave and Wireless Components Letters

IS - 9

M1 - 7163370

ER -

Acoustic wave resonator-based absorptive bandstop filters with ultra-narrow bandwidth

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Keywords

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