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Article: Wideband microstrip ring resonator bandpass filters under multiple resonances

TitleWideband microstrip ring resonator bandpass filters under multiple resonances
Authors
KeywordsMicrostrip ring resonator
Multiple resonant modes
Parallel-coupled line
Wideband bandpass filter
Issue Date2007
PublisherIEEE
Citation
Ieee Transactions On Microwave Theory And Techniques, 2007, v. 55 n. 10, p. 2176-2181 How to Cite?
AbstractA new class of wideband microstrip bandpass filters is proposed under multiple resonances of an asymmetric ring resonator. Two capacitive coupling elements are placed at two perpendicular positions of a squared ring, whereas a pair of open-circuited stubs is formed in the symmetrical plane of these two excited ports similar to a dual-mode ring filter in shape. By stretching the paired stubs close to one-eighth of a wavelength, the first two even-order resonances move down to be quasi-equally located at two sides of the first odd-order resonance, thus forming a triple-resonance ring resonator. As interdigital coupled lines are installed at two ports instead of lumped capacitors, two extra resonances can be moved into passband, thereby making up a quintuple-resonance ring resonator. To provide an insight into their operating mechanism, these ring resonators are characterized in terms of transmission line theory. Afterwards, various wideband microstrip ring resonator bandpass filters with one or two asymmetric ring resonators are optimally designed and fabricated. Simulated results are confirmed via experiment, showing good wideband filtering performance with widened/deepened upper stopband and sharpened rejection skirts outside the wide passband. © 2007 IEEE.
Persistent Identifierhttp://hdl.handle.net/10722/92859
ISSN
2015 Impact Factor: 2.284
2015 SCImago Journal Rankings: 1.346
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorSun, Sen_HK
dc.contributor.authorZhu, Len_HK
dc.date.accessioned2010-09-22T05:01:47Z-
dc.date.available2010-09-22T05:01:47Z-
dc.date.issued2007en_HK
dc.identifier.citationIeee Transactions On Microwave Theory And Techniques, 2007, v. 55 n. 10, p. 2176-2181en_HK
dc.identifier.issn0018-9480en_HK
dc.identifier.urihttp://hdl.handle.net/10722/92859-
dc.description.abstractA new class of wideband microstrip bandpass filters is proposed under multiple resonances of an asymmetric ring resonator. Two capacitive coupling elements are placed at two perpendicular positions of a squared ring, whereas a pair of open-circuited stubs is formed in the symmetrical plane of these two excited ports similar to a dual-mode ring filter in shape. By stretching the paired stubs close to one-eighth of a wavelength, the first two even-order resonances move down to be quasi-equally located at two sides of the first odd-order resonance, thus forming a triple-resonance ring resonator. As interdigital coupled lines are installed at two ports instead of lumped capacitors, two extra resonances can be moved into passband, thereby making up a quintuple-resonance ring resonator. To provide an insight into their operating mechanism, these ring resonators are characterized in terms of transmission line theory. Afterwards, various wideband microstrip ring resonator bandpass filters with one or two asymmetric ring resonators are optimally designed and fabricated. Simulated results are confirmed via experiment, showing good wideband filtering performance with widened/deepened upper stopband and sharpened rejection skirts outside the wide passband. © 2007 IEEE.en_HK
dc.languageengen_HK
dc.publisherIEEEen_HK
dc.relation.ispartofIEEE Transactions on Microwave Theory and Techniquesen_HK
dc.subjectMicrostrip ring resonatoren_HK
dc.subjectMultiple resonant modesen_HK
dc.subjectParallel-coupled lineen_HK
dc.subjectWideband bandpass filteren_HK
dc.titleWideband microstrip ring resonator bandpass filters under multiple resonancesen_HK
dc.typeArticleen_HK
dc.identifier.emailSun, S:sunsheng@hku.hken_HK
dc.identifier.authoritySun, S=rp01431en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1109/TMTT.2007.906510en_HK
dc.identifier.scopuseid_2-s2.0-35348916210en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-35348916210&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume55en_HK
dc.identifier.issue10en_HK
dc.identifier.spage2176en_HK
dc.identifier.epage2181en_HK
dc.identifier.isiWOS:000250375000020-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridSun, S=7404509453en_HK
dc.identifier.scopusauthoridZhu, L=7404201926en_HK

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