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Design of a compact dual-band bandpass filter using coupled stepped-impedance resonators
Runqi Zhang1; Lei Zhu2
2014-01-13
Source PublicationIEEE Microwave and Wireless Components Letters
ISSN1531-1309
Volume24Issue:3Pages:155-157
Abstract

A compact dual-band bandpass filter (BPF) using coupled three-section stepped-impedance resonators (SIRs) has been proposed and analyzed in this letter. By its symmetrical merit, the even-odd mode analysis method is used to obtain the input admittance of its bisection circuits. After the Richard's transformation, each bisection circuit is derived as an equivalent LC circuit. Combining these two LC circuits, the equivalent circuit for the proposed filter is built with its design parameters as a function of even-/odd-mode impedances of the coupled SIR. The proposed circuit is then classified into two distinctive parts, a transversal structure for the first two resonances and a II-shaped inductor network for the mutual coupling between the source/load. Thus, there are two reflection zeros appearing in each passband and five transmission zeros (TZs) generated to improve the out-of-band rejection. A prototype dual-band filter has been designed and fabricated to verify the predicted filtering performance and the accuracy of the presented design principle. 

KeywordCoupled Microstrip Lines Dual-band Bandpass Filter (Bpf) Stepped-impedance Resonator (Sir)
DOI10.1109/LMWC.2013.2293670
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaEngineering
WOS SubjectEngineering, Electrical & Electronic
WOS IDWOS:000332952900007
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Citation statistics
Cited Times [WOS]:21   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionUniversity of Macau
Affiliation1.School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore
2.Faculty of Science and Technology, University of Macau, China
Recommended Citation
GB/T 7714
Runqi Zhang,Lei Zhu. Design of a compact dual-band bandpass filter using coupled stepped-impedance resonators[J]. IEEE Microwave and Wireless Components Letters,2014,24(3):155-157.
APA Runqi Zhang,&Lei Zhu.(2014).Design of a compact dual-band bandpass filter using coupled stepped-impedance resonators.IEEE Microwave and Wireless Components Letters,24(3),155-157.
MLA Runqi Zhang,et al."Design of a compact dual-band bandpass filter using coupled stepped-impedance resonators".IEEE Microwave and Wireless Components Letters 24.3(2014):155-157.
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