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Wideband differential bandpass filters on multimode slotline resonator with intrinsic common-mode rejection
Xin Guo2; Lei Zhu1; Kam-Weng Tam1; Wen Wu2
2015-03-26
Source PublicationIEEE Transactions on Microwave Theory and Techniques
ISSN0018-9480
Volume63Issue:5Pages:1587-1594
Abstract

In this paper, two kinds of wideband differential filters with intrinsic common-mode (CM) rejection are proposed. Both these filters are realized based on the multimode slotline resonators under the dual- and triple-mode resonance, respectively. For Filter 1, the microstrip lines with a pair of differential ports at the two sides are directly tapped on a slotline resonator. For Filter 2, the slotline resonator is connected with two pairs of microstrip open-ended stubs both at top and bottom layers at the beginning. In these two filters, the CM signals are effectively rejected during electromagnetic field conversion. Only the differential-mode performances are left to be focused on. A systematic design method is then presented with simplified circuit models in differential mode, and frequency responses of these models are synthesized and further mapped into physical dimensions. Transformers are used in the mapping procedure and their turn ratios are calculated to find the exact final dimensions or are properly used to realize desired performance with some unattainable impedance values in synthesized simplified models. Finally, two filters are designed, fabricated, and measured to support the design method.

KeywordEquivalent Circuit And Turn Ratio Multimode Slotline Resonator Synthesis Design Wideband Differential Filters
DOI10.1109/TMTT.2015.2412111
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaEngineering
WOS SubjectEngineering, Electrical & Electronic
WOS IDWOS:000354365900014
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Citation statistics
Cited Times [WOS]:40   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionFaculty of Science and Technology
Affiliation1.Faculty of Science and Technology, Department of Electrical and Computer Engineering, University of Macau, Macau SAR, China
2.Ministerial Key Laboratory, JGMT, Nanjing University of Science and Technology, Nanjing 210094, China
Recommended Citation
GB/T 7714
Xin Guo,Lei Zhu,Kam-Weng Tam,et al. Wideband differential bandpass filters on multimode slotline resonator with intrinsic common-mode rejection[J]. IEEE Transactions on Microwave Theory and Techniques,2015,63(5):1587-1594.
APA Xin Guo,Lei Zhu,Kam-Weng Tam,&Wen Wu.(2015).Wideband differential bandpass filters on multimode slotline resonator with intrinsic common-mode rejection.IEEE Transactions on Microwave Theory and Techniques,63(5),1587-1594.
MLA Xin Guo,et al."Wideband differential bandpass filters on multimode slotline resonator with intrinsic common-mode rejection".IEEE Transactions on Microwave Theory and Techniques 63.5(2015):1587-1594.
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