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Wideband out-of-phase filtering power divider with high selectivity
Xuedao Wang1,2; Wai Wa Choi2; Jianpeng Wang1; Wen Wu1
Conference Name2018 Asia-Pacific Microwave Conference (APMC)
Source PublicationAsia-Pacific Microwave Conference Proceedings, APMC
Conference Date6-9 Nov. 2018
Conference PlaceKyoto, Japan

A new design of wideband out-of-phase filtering power divider (FPD) with high selectivity is presented on the basis of a vertical microstrip-slotline-microstrip (M-S-M) transition in this paper. By wisely replacing the traditional quarter-wavelength open-circuited microstrip line in the M-S transition with an open/short stepped-impedance resonator, two transmission zeros (TZs) are generated, resulting in a controllable bandwidth and sharp skirt selectivity of the FPD. To well isolate the out-of-phase signals between two output ports, an isolation network consisting of grounded resistor and a microstrip line is located on the differential symmetrical plane. Equations for determination of TZs are derived from the equivalent schematic circuit. For demonstration, a prototype centered at 2.83 GHz with 3-dB fractional bandwidth of 64.8% is designed, fabricated and tested. Both simulated and measured results are displayed to verify the feasibility of our proposed design concept.

KeywordFiltering Power Divider (Fpd) Out-of-phase Isolation Wideband Stepped-impedance Resonator (Sir)
URLView the original
Scopus ID2-s2.0-85061781756
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Document TypeConference paper
Affiliation1.Ministerial Key Laboratory of JGMT,Nanjing University of Science and Technology,Nanjing,210094,China
2.Department of Electrical and Computer Engineering,University of Macau,Macao,Macao
First Author AffilicationUniversity of Macau
Recommended Citation
GB/T 7714
Xuedao Wang,Wai Wa Choi,Jianpeng Wang,et al. Wideband out-of-phase filtering power divider with high selectivity[C],2019:417-419.
APA Xuedao Wang,Wai Wa Choi,Jianpeng Wang,&Wen Wu.(2019).Wideband out-of-phase filtering power divider with high selectivity.Asia-Pacific Microwave Conference Proceedings, APMC,2018-November,417-419.
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