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Conference Paper: A dual-band ring-resonator bandpass filter based on two pairs of degenerate modes

TitleA dual-band ring-resonator bandpass filter based on two pairs of degenerate modes
Authors
KeywordsBandpass Filter
Dual Band
Dual Mode
Open-Circuited Stubs
Ring Resonator
Transmission Zeros
Issue Date2010
Citation
Ieee Transactions On Microwave Theory And Techniques, 2010, v. 58 n. 12 PART 1, p. 3427-3432 How to Cite?
AbstractIn this paper, a class of dual-band ring-resonator bandpass filters is proposed based on a single ring resonator. As its most distinctive feature, two pairs of first- and second-order degenerate resonant modes in a ring resonator are simultaneously excited, resulting in a compact dual-mode dual-band bandpass filter with two transmission poles in both passbands. Firstly, two capacitors or parallel-coupled lines are placed at two nonorthogonally excited positions along a ring resonator in order to excite the two first-order degenerate modes and create multiple transmission zeros. Next, a set of perturbations is introduced on the ring to excite the two second-order degenerate modes. In our design, two excitation positions are first placed with between 45 - and 135 -separation on a ring. Simulations show that, with a proper arrangement of the excitation angle, two transmission poles in the first passband can be excited and more transmission zeros can be generated. Four and eight open-circuited stubs are loaded symmetrically along the ring, resulting in synchronous excitation of two poles in the second passband. Of the two designed filters with 135 - and 45 -separation, the one with 45 exhibits much better out-of-band performance with three additional transmission zeros at frequencies lower than the first passband, between the two passbands and higher than the second passband. Finally, two filter prototypes are fabricated and their measured results are found to be in good agreement with theory. © 2010 IEEE.
Persistent Identifierhttp://hdl.handle.net/10722/158666
ISSN
2015 Impact Factor: 2.284
2015 SCImago Journal Rankings: 1.346
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorLuo, Sen_US
dc.contributor.authorZhu, Len_US
dc.contributor.authorSun, Sen_US
dc.date.accessioned2012-08-08T09:00:45Z-
dc.date.available2012-08-08T09:00:45Z-
dc.date.issued2010en_US
dc.identifier.citationIeee Transactions On Microwave Theory And Techniques, 2010, v. 58 n. 12 PART 1, p. 3427-3432en_US
dc.identifier.issn0018-9480en_US
dc.identifier.urihttp://hdl.handle.net/10722/158666-
dc.description.abstractIn this paper, a class of dual-band ring-resonator bandpass filters is proposed based on a single ring resonator. As its most distinctive feature, two pairs of first- and second-order degenerate resonant modes in a ring resonator are simultaneously excited, resulting in a compact dual-mode dual-band bandpass filter with two transmission poles in both passbands. Firstly, two capacitors or parallel-coupled lines are placed at two nonorthogonally excited positions along a ring resonator in order to excite the two first-order degenerate modes and create multiple transmission zeros. Next, a set of perturbations is introduced on the ring to excite the two second-order degenerate modes. In our design, two excitation positions are first placed with between 45 - and 135 -separation on a ring. Simulations show that, with a proper arrangement of the excitation angle, two transmission poles in the first passband can be excited and more transmission zeros can be generated. Four and eight open-circuited stubs are loaded symmetrically along the ring, resulting in synchronous excitation of two poles in the second passband. Of the two designed filters with 135 - and 45 -separation, the one with 45 exhibits much better out-of-band performance with three additional transmission zeros at frequencies lower than the first passband, between the two passbands and higher than the second passband. Finally, two filter prototypes are fabricated and their measured results are found to be in good agreement with theory. © 2010 IEEE.en_US
dc.languageengen_US
dc.relation.ispartofIEEE Transactions on Microwave Theory and Techniquesen_US
dc.subjectBandpass Filteren_US
dc.subjectDual Banden_US
dc.subjectDual Modeen_US
dc.subjectOpen-Circuited Stubsen_US
dc.subjectRing Resonatoren_US
dc.subjectTransmission Zerosen_US
dc.titleA dual-band ring-resonator bandpass filter based on two pairs of degenerate modesen_US
dc.typeConference_Paperen_US
dc.identifier.emailSun, S:sunsheng@hku.hken_US
dc.identifier.authoritySun, S=rp01431en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1109/TMTT.2010.2053590en_US
dc.identifier.scopuseid_2-s2.0-78650271827en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-78650271827&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume58en_US
dc.identifier.issue12 PART 1en_US
dc.identifier.spage3427en_US
dc.identifier.epage3432en_US
dc.identifier.isiWOS:000285246500006-
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridLuo, S=7401985951en_US
dc.identifier.scopusauthoridZhu, L=7404201926en_US
dc.identifier.scopusauthoridSun, S=7404509453en_US

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