Please use this identifier to cite or link to this item: http://localhost/handle/Hannan/601571
Title: High- Q Bandstop Filters Exploiting Acoustic-Wave-Lumped-Element Resonators (AWLRs)
Authors: Dimitra Psychogiou;Roberto Gómez-García;Dimitrios Peroulis
subject: notch filter|Acoustic wave (AW) filter|surface acoustic wave (SAW) filter|bandstop filter (BSF)|narrowband filter|high-quality-factor (Q) filter|tunable filter
Year: 2016
Publisher: IEEE
Abstract: This brief focuses on the radio frequency (RF) design of novel high-quality-factor (Q) reflective-type bandstop filters (BSFs) with narrow bandwidth (BW), small physical size, and large stopband attenuation levels. They are realized by merging acoustic-wave-lumped-element resonators (AWLRs) and lumped-element impedance inverters in a single filter architecture. In this manner, deep stopband notches that correspond to resonators with effective quality factors (Q<sub>seff</sub>) on the order of 1000 are created. Furthermore, the obtained rejection bands exhibit fractional BWs that are no longer restricted by the electromechanical coupling coefficient k2t of the constituent acoustic wave (AW) resonators as opposed to the traditional all-AW filters. Experimental prototypes of first and third-order frequency-static BSFs were built and tested at 418 MHz to validate the proposed concept. Measured stopbands with 3-dB BWs from 0.2 to 0.5 MHz, maximum stopband attenuation in the range of 15-43 dB, and passband insertion loss between 0.37 and 1.6 dB are reported. Moreover, an electronically switchable BSF with dynamic notch allocation is presented as a practical demonstrator device for switchable RF-interference suppression. A design methodology that relates to coupled-resonator filter formalism is also addressed to facilitate the systematic theoretical synthesis of the engineered AWLR-based reflective-type BSFs.
URI: http://localhost/handle/Hannan/138151
http://localhost/handle/Hannan/601571
ISSN: 1549-7747
1558-3791
volume: 63
issue: 1
Appears in Collections:2016

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Title: High- Q Bandstop Filters Exploiting Acoustic-Wave-Lumped-Element Resonators (AWLRs)
Authors: Dimitra Psychogiou;Roberto G&#x00F3;mez-Garc&#x00ED;a;Dimitrios Peroulis
subject: notch filter|Acoustic wave (AW) filter|surface acoustic wave (SAW) filter|bandstop filter (BSF)|narrowband filter|high-quality-factor (Q) filter|tunable filter
Year: 2016
Publisher: IEEE
Abstract: This brief focuses on the radio frequency (RF) design of novel high-quality-factor (Q) reflective-type bandstop filters (BSFs) with narrow bandwidth (BW), small physical size, and large stopband attenuation levels. They are realized by merging acoustic-wave-lumped-element resonators (AWLRs) and lumped-element impedance inverters in a single filter architecture. In this manner, deep stopband notches that correspond to resonators with effective quality factors (Q<sub>seff</sub>) on the order of 1000 are created. Furthermore, the obtained rejection bands exhibit fractional BWs that are no longer restricted by the electromechanical coupling coefficient k2t of the constituent acoustic wave (AW) resonators as opposed to the traditional all-AW filters. Experimental prototypes of first and third-order frequency-static BSFs were built and tested at 418 MHz to validate the proposed concept. Measured stopbands with 3-dB BWs from 0.2 to 0.5 MHz, maximum stopband attenuation in the range of 15-43 dB, and passband insertion loss between 0.37 and 1.6 dB are reported. Moreover, an electronically switchable BSF with dynamic notch allocation is presented as a practical demonstrator device for switchable RF-interference suppression. A design methodology that relates to coupled-resonator filter formalism is also addressed to facilitate the systematic theoretical synthesis of the engineered AWLR-based reflective-type BSFs.
URI: http://localhost/handle/Hannan/138151
http://localhost/handle/Hannan/601571
ISSN: 1549-7747
1558-3791
volume: 63
issue: 1
Appears in Collections:2016

Files in This Item:
File Description SizeFormat 
7346441.pdf1.07 MBAdobe PDFThumbnail
Preview File
Title: High- Q Bandstop Filters Exploiting Acoustic-Wave-Lumped-Element Resonators (AWLRs)
Authors: Dimitra Psychogiou;Roberto G&#x00F3;mez-Garc&#x00ED;a;Dimitrios Peroulis
subject: notch filter|Acoustic wave (AW) filter|surface acoustic wave (SAW) filter|bandstop filter (BSF)|narrowband filter|high-quality-factor (Q) filter|tunable filter
Year: 2016
Publisher: IEEE
Abstract: This brief focuses on the radio frequency (RF) design of novel high-quality-factor (Q) reflective-type bandstop filters (BSFs) with narrow bandwidth (BW), small physical size, and large stopband attenuation levels. They are realized by merging acoustic-wave-lumped-element resonators (AWLRs) and lumped-element impedance inverters in a single filter architecture. In this manner, deep stopband notches that correspond to resonators with effective quality factors (Q<sub>seff</sub>) on the order of 1000 are created. Furthermore, the obtained rejection bands exhibit fractional BWs that are no longer restricted by the electromechanical coupling coefficient k2t of the constituent acoustic wave (AW) resonators as opposed to the traditional all-AW filters. Experimental prototypes of first and third-order frequency-static BSFs were built and tested at 418 MHz to validate the proposed concept. Measured stopbands with 3-dB BWs from 0.2 to 0.5 MHz, maximum stopband attenuation in the range of 15-43 dB, and passband insertion loss between 0.37 and 1.6 dB are reported. Moreover, an electronically switchable BSF with dynamic notch allocation is presented as a practical demonstrator device for switchable RF-interference suppression. A design methodology that relates to coupled-resonator filter formalism is also addressed to facilitate the systematic theoretical synthesis of the engineered AWLR-based reflective-type BSFs.
URI: http://localhost/handle/Hannan/138151
http://localhost/handle/Hannan/601571
ISSN: 1549-7747
1558-3791
volume: 63
issue: 1
Appears in Collections:2016

Files in This Item:
File Description SizeFormat 
7346441.pdf1.07 MBAdobe PDFThumbnail
Preview File