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Article: A dual-mode dual-band bandpass filter using a single slot ring resonator

TitleA dual-mode dual-band bandpass filter using a single slot ring resonator
Authors
KeywordsDual-band bandpass filter
Dual-band filter
Slot-ring
Optical resonators
Bandpass filters
Issue Date2011
PublisherEMW Publishing. The Journal's web site is located at http://www.jpier.org/PIERL/
Citation
Progress in Electromagnetics Research Letters, 2011, v. 23, p. 173-180 How to Cite?
AbstractA dual-mode dual-band bandpass filter is designed using a single stub-loaded slot ring resonator. This resonator is coupled to the two external feed lines at two positions spaced at 135° along the slot ring through a pair of microstrip-slotline T-junctions. With a proper choice of the degree of external coupling, the first-order degenerate modes are split to make up the first passband with two transmission poles. The second passband is realized by the second-order degenerate modes, which are stimulated by symmetrically attaching four identical stubs along the slotring. The center frequency ratio of the two operating passbands is controlled by the nature and strength of the external coupling, which is determined by the characteristics of the microstrip open-circuited stubs. Finally, a dual-band filter with center frequencies at 2.4 and 5.2 GHz is designed and fabricated. Measured results verify the design principle and predicted dual-passband performance. Benefiting from an additional transmission zero brought by the transitions,the upper stopband is expanded up to 12.75 GHz with at least 13 dB of rejection.
Persistent Identifierhttp://hdl.handle.net/10722/139260
ISSN
2015 SCImago Journal Rankings: 0.307
References

 

DC FieldValueLanguage
dc.contributor.authorLuo, Sen_HK
dc.contributor.authorZhu, Len_HK
dc.contributor.authorSun, Sen_HK
dc.date.accessioned2011-09-23T05:47:40Z-
dc.date.available2011-09-23T05:47:40Z-
dc.date.issued2011en_HK
dc.identifier.citationProgress in Electromagnetics Research Letters, 2011, v. 23, p. 173-180en_HK
dc.identifier.issn1937-6480en_HK
dc.identifier.urihttp://hdl.handle.net/10722/139260-
dc.description.abstractA dual-mode dual-band bandpass filter is designed using a single stub-loaded slot ring resonator. This resonator is coupled to the two external feed lines at two positions spaced at 135° along the slot ring through a pair of microstrip-slotline T-junctions. With a proper choice of the degree of external coupling, the first-order degenerate modes are split to make up the first passband with two transmission poles. The second passband is realized by the second-order degenerate modes, which are stimulated by symmetrically attaching four identical stubs along the slotring. The center frequency ratio of the two operating passbands is controlled by the nature and strength of the external coupling, which is determined by the characteristics of the microstrip open-circuited stubs. Finally, a dual-band filter with center frequencies at 2.4 and 5.2 GHz is designed and fabricated. Measured results verify the design principle and predicted dual-passband performance. Benefiting from an additional transmission zero brought by the transitions,the upper stopband is expanded up to 12.75 GHz with at least 13 dB of rejection.en_HK
dc.languageengen_US
dc.publisherEMW Publishing. The Journal's web site is located at http://www.jpier.org/PIERL/en_HK
dc.relation.ispartofProgress in Electromagnetics Research Lettersen_HK
dc.subjectDual-band bandpass filter-
dc.subjectDual-band filter-
dc.subjectSlot-ring-
dc.subjectOptical resonators-
dc.subjectBandpass filters-
dc.titleA dual-mode dual-band bandpass filter using a single slot ring resonatoren_HK
dc.typeArticleen_HK
dc.identifier.emailSun, S:sunsheng@hku.hken_HK
dc.identifier.authoritySun, S=rp01431en_HK
dc.description.naturelink_to_OA_fulltext-
dc.identifier.scopuseid_2-s2.0-79957865025en_HK
dc.identifier.hkuros193794en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-79957865025&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume23en_HK
dc.identifier.spage173en_HK
dc.identifier.epage180en_HK
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridLuo, S=54401220200en_HK
dc.identifier.scopusauthoridZhu, L=7404201926en_HK
dc.identifier.scopusauthoridSun, S=7404509453en_HK

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