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dc.contributor.authorLin, Yun-Weien_US
dc.contributor.authorLu, Jhe-Chingen_US
dc.contributor.authorChang, Chi-Yangen_US
dc.date.accessioned2014-12-08T15:23:31Z-
dc.date.available2014-12-08T15:23:31Z-
dc.date.issued2012-07-01en_US
dc.identifier.issn0018-9480en_US
dc.identifier.urihttp://hdl.handle.net/11536/16448-
dc.description.abstractA new high-order wideband planar balun filter is proposed in this paper. The balun filter is exact synthesized based on S-domain bandpass prototype using Richards' Theorem to fit the user-defined specifications. By analyzing the redundant element in the equivalent circuit, the output impedance of the balun filter can be arbitrarily assigned. To use an S-plane bandpass prototype other than a high-pass prototype can shrink the circuit area and improve the stopband performance. The lumped capacitor approximation suppresses the spurious response in the stopband and further reduces the circuit size. A high-order balun filter with a bandwidth of 100% and a reflection coefficient of -15 dB is implemented by combining of microstrip lines, slotlines, and coplanar striplines. The simulation and measurement results match well.en_US
dc.language.isoen_USen_US
dc.subjectBalun filteren_US
dc.subjectbandpass prototypeen_US
dc.subjectimpedance transformationen_US
dc.subjectplanar structureen_US
dc.subjectsynthesisen_US
dc.titleDesign of High-Order Wideband Planar Balun Filter in S-Plane Bandpass Prototypeen_US
dc.typeArticleen_US
dc.identifier.journalIEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUESen_US
dc.citation.volume60en_US
dc.citation.issue7en_US
dc.citation.epage2124en_US
dc.contributor.department電信工程研究所zh_TW
dc.contributor.departmentInstitute of Communications Engineeringen_US
dc.identifier.wosnumberWOS:000305903500011-
dc.citation.woscount3-
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