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Differential microstrip bandpass filter with dual-band responses using parallel-coupled line structure
Li Yang; Pedro Cheong; Wai-Wa Choi; Kam-Weng Tam
2013-01-28
Conference NameAsia-Pacific Microwave Conference (APMC)
Source PublicationAsia-Pacific Microwave Conference Proceedings, APMC
Pages28-30
Conference Date4-7 Dec. 2012
Conference PlaceKaohsiung, Taiwan
CountryTaiwan,China
Author of SourceIEEE
Publication Place345 E 47TH ST, NEW YORK, NY 10017 USA
PublisherIEEE
Abstract

In this paper, a novel differential bandpass filter (BPF) with dual-band filtering response is proposed. The equivalent circuits of proposed dual-band filter are illustrated and analyzed in both differential-mode and common-mode. By controlling the electrical length of an open stub in the differential-mode, two passbands operating at the desired frequency ratio can be designed. Also, the spurious response within the passbands can be suppressed by the over-coupling technique. In the common-mode operation, the short-ended meander line enhances the common-mode suppression. From the measurement results, the dual-band BPF operates at 854 MHz and 2.40 GHz, with 3-dB fractional bandwidth 7.17% and 3.71% respectively. A transmission zero is recorded at 1.79 GHz to suppress the spurious passband. The measured common-mode suppression is better than 18.5 dB in two passbands is achieved.

KeywordCommon-mode Suppression Differential Filter Dual-band Reactive Load
DOI10.1109/APMC.2012.6421487
URLView the original
Indexed ByCPCI-S
Language英語English
WOS Research AreaTelecommunications
WOS SubjectTelecommunications
WOS IDWOS:000319213700010
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Citation statistics
Cited Times [WOS]:1   [WOS Record]     [Related Records in WOS]
Document TypeConference paper
CollectionDEPARTMENT OF ELECTRICAL AND COMPUTER ENGINEERING
AffiliationDepartment of Electrical and Computer Engineering, Faculty of Science and Technology, University of Macau, Av. Padre Tomás Pereira Taipa, Macao SAR, China
First Author AffilicationFaculty of Science and Technology
Recommended Citation
GB/T 7714
Li Yang,Pedro Cheong,Wai-Wa Choi,et al. Differential microstrip bandpass filter with dual-band responses using parallel-coupled line structure[C]//IEEE. 345 E 47TH ST, NEW YORK, NY 10017 USA:IEEE,2013:28-30.
APA Li Yang,Pedro Cheong,Wai-Wa Choi,&Kam-Weng Tam.(2013).Differential microstrip bandpass filter with dual-band responses using parallel-coupled line structure.Asia-Pacific Microwave Conference Proceedings, APMC,28-30.
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