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

TitleA dual-band bandpass filter using a single dual-mode ring resonator
Authors
KeywordsBandpass filter (BPF)
Dual-mode dual-band
Isolation
Ring resonator
Transmission zeros
Issue Date2011
PublisherIEEE Microwave Theory and Techniques Society.
Citation
IEEE Microwave and Wireless Components Letters, 2011, v. 21 n. 6, p. 298-300 How to Cite?
AbstractA simple microstrip ring-resonator is presented for novel design of dual-band dual-mode bandpass filters with good isolation and upper-stopband performance. By increasing the length of the loaded open-circuited stub, the two first-order degenerate modes are excited and slit for the use of the first passband, while one of the third-order degenerate modes moves downward and forms the second passband together with a second-order degenerate mode. Meanwhile, three transmission zeros are properly tuned for the rejections between the two passbands and in the upper stopband. After installing two coupled-line sections on a square ring at the two ports with 90°-separation, a dual-band filter with the two transmission poles in each passband is designed and measured. Without adding any additional perturbation element inside the ring, the measured filter shows good performance for both in-band matching and outside rejections of the desired dual passbands. © 2011 IEEE.
Persistent Identifierhttp://hdl.handle.net/10722/139262
ISSN
2015 Impact Factor: 1.599
2015 SCImago Journal Rankings: 0.942
ISI Accession Number ID
Funding AgencyGrant Number
Alexander von Humboldt Foundation, Germany
Funding Information:

This work was supported in part by the Alexander von Humboldt Foundation, Germany.

References

 

DC FieldValueLanguage
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.citationIEEE Microwave and Wireless Components Letters, 2011, v. 21 n. 6, p. 298-300en_HK
dc.identifier.issn1531-1309en_HK
dc.identifier.urihttp://hdl.handle.net/10722/139262-
dc.description.abstractA simple microstrip ring-resonator is presented for novel design of dual-band dual-mode bandpass filters with good isolation and upper-stopband performance. By increasing the length of the loaded open-circuited stub, the two first-order degenerate modes are excited and slit for the use of the first passband, while one of the third-order degenerate modes moves downward and forms the second passband together with a second-order degenerate mode. Meanwhile, three transmission zeros are properly tuned for the rejections between the two passbands and in the upper stopband. After installing two coupled-line sections on a square ring at the two ports with 90°-separation, a dual-band filter with the two transmission poles in each passband is designed and measured. Without adding any additional perturbation element inside the ring, the measured filter shows good performance for both in-band matching and outside rejections of the desired dual passbands. © 2011 IEEE.en_HK
dc.languageengen_US
dc.publisherIEEE Microwave Theory and Techniques Society.en_US
dc.relation.ispartofIEEE Microwave and Wireless Components Lettersen_HK
dc.rights©2011 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.-
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subjectBandpass filter (BPF)en_HK
dc.subjectDual-mode dual-banden_HK
dc.subjectIsolationen_HK
dc.subjectRing resonatoren_HK
dc.subjectTransmission zerosen_HK
dc.titleA dual-band bandpass filter using a single dual-mode ring resonatoren_HK
dc.typeArticleen_HK
dc.identifier.emailSun, S:sunsheng@hku.hken_HK
dc.identifier.authoritySun, S=rp01431en_HK
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1109/LMWC.2011.2132119en_HK
dc.identifier.scopuseid_2-s2.0-79957981548en_HK
dc.identifier.hkuros193799en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-79957981548&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume21en_HK
dc.identifier.issue6en_HK
dc.identifier.spage298en_HK
dc.identifier.epage300en_HK
dc.identifier.isiWOS:000291318100008-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridSun, S=7404509453en_HK

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