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Synthesis and Design of Miniaturized Wideband Bandpass Filters With Scaled Transmission Line for Spurious-Response Suppression
Zhang, Runqi1; Luo, Sha1; Zhu, Lei2; Yang, Li2
2017-08
Source PublicationIEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES
ISSN0018-9480
Volume65Issue:8Pages:2878-2885
Abstract

A scaled transmission line method has been proposed to realize a class of size miniaturized and spurious-response suppressed wideband bandpass filters (BPFs). The mechanism is based on a dual-band BPF with its lower passband assigned as the primary passband and far away from the upper one. Therefore, the primary passband is always at a relatively small electrical length frequency, which is a prerequisite to scale the transmission line network. Three types of line scaling/approximating are discussed as stub loaded transmission lines, short-, and open-circuited stubs. Comparing before and after scaling, these circuit components preserve an almost exact characteristic in the primary passband frequency range but introduce adjustable transmission nulls in the spurious passband. For suppressing different spurious responses, line scaling factors are varied for different circuit components to locate transmission nulls at desired places. Two circuit examples in the circuit topology as distributed and mixed circuit networks have been experimentally demonstrated, which has approved the miniaturization and spurious suppression benefits of the proposed technique.

KeywordFilter Synthesis And Design Miniaturized Filter And Scaled Transmission Line Spurious Response Suppression
DOI10.1109/TMTT.2017.2668411
URLView the original
Indexed BySCI
Language英语
WOS Research AreaEngineering
WOS SubjectEngineering, Electrical & Electronic
WOS IDWOS:000407370900024
PublisherIEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
The Source to ArticleWOS
Fulltext Access
Citation statistics
Cited Times [WOS]:4   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionDEPARTMENT OF ELECTRICAL AND COMPUTER ENGINEERING
Affiliation1.Department of Electrical and Computer Engineering, National University of Singapore, Singapore 119077
2.Faculty of Science and Technology, Department of Electrical and Computer Engineering, University of Macau, Zhuhai, China
Recommended Citation
GB/T 7714
Zhang, Runqi,Luo, Sha,Zhu, Lei,et al. Synthesis and Design of Miniaturized Wideband Bandpass Filters With Scaled Transmission Line for Spurious-Response Suppression[J]. IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES,2017,65(8):2878-2885.
APA Zhang, Runqi,Luo, Sha,Zhu, Lei,&Yang, Li.(2017).Synthesis and Design of Miniaturized Wideband Bandpass Filters With Scaled Transmission Line for Spurious-Response Suppression.IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES,65(8),2878-2885.
MLA Zhang, Runqi,et al."Synthesis and Design of Miniaturized Wideband Bandpass Filters With Scaled Transmission Line for Spurious-Response Suppression".IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES 65.8(2017):2878-2885.
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