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Design of compact planar power divider with wideband bandpass response and high in-band isolation
Xuedao Wang1; Jianpeng Wang1; Lei Zhu2; Wai-Wa Choi2; Wen Wu1
2021-07
Source PublicationIET Microwaves, Antennas and Propagation
ISSN1751-8725
Volume15Issue:8Pages:954-965
Abstract

In this study, a compact planar power divider (PD) with wideband bandpass response is proposed based on a coupled three-line filtering prototype. With two back-to-back microstrip feeding lines and a coplanar waveguide resonator located in the middle ground plane, the filtering structure is constructed. According to the synthesis approach, the proposed filtering structure can achieve an equal in-band ripple response with three transmission poles and four out-of-band transmission zeros. In order to make the proposed PD inherit the designed filtering performance, one of the output lines in the filter network is modified to realize a 50 to 25 Ω impedance transformation in the passband first. Then, for good in-band isolation and impedance matching at output ports, the modified output line is split into two separated lines by a slot so that a lumped resistor can be loaded at the ends of the two separated output lines. By properly setting the slot width and the resistance with guidance, high isolation level over an ultra-wide passband is attained. For demonstration, three cases of the PDs with different bandwidths are designed on the basis of the corresponding filter designs. Finally, two bandpass PDs are fabricated and tested to verify the design concept.

DOI10.1049/mia2.12114
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaEngineering ; Telecommunications
WOS SubjectEngineering, Electrical & Electronic ; Telecommunications
WOS IDWOS:000639378800001
Scopus ID2-s2.0-85112645921
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Cited Times [WOS]:0   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionDEPARTMENT OF ELECTRICAL AND COMPUTER ENGINEERING
Corresponding AuthorJianpeng Wang; Lei Zhu
Affiliation1.Ministerial Key Laboratory of JGMT, Nanjing University of Science and Technology, Nanjing, China
2.Department of Electrical and Computer Engineering, Faculty of Science and Technology, University of Macau, Macao SAR, China
Corresponding Author AffilicationFaculty of Science and Technology
Recommended Citation
GB/T 7714
Xuedao Wang,Jianpeng Wang,Lei Zhu,et al. Design of compact planar power divider with wideband bandpass response and high in-band isolation[J]. IET Microwaves, Antennas and Propagation,2021,15(8):954-965.
APA Xuedao Wang,Jianpeng Wang,Lei Zhu,Wai-Wa Choi,&Wen Wu.(2021).Design of compact planar power divider with wideband bandpass response and high in-band isolation.IET Microwaves, Antennas and Propagation,15(8),954-965.
MLA Xuedao Wang,et al."Design of compact planar power divider with wideband bandpass response and high in-band isolation".IET Microwaves, Antennas and Propagation 15.8(2021):954-965.
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