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Compact Third-Order Microstrip Bandpass Filter Using Hybrid Resonators
University of Electronic Science and Technology of China.
KTH, School of Electrical Engineering (EES), Electromagnetic Engineering.ORCID iD: 0000-0001-9241-8030
KTH, School of Electrical Engineering (EES), Electromagnetic Engineering.ORCID iD: 0000-0002-3401-1125
2011 (English)In: Progress in Electromagnetics Research C, ISSN 1937-8718, Vol. 19, 93-106 p.Article in journal (Refereed) Published
Abstract [en]

In this paper, a novel microwave bandpass filter structure is proposed. By introducing a metallic via hole, the filter structure operates as one λ/2 and two λ/4 uniform impedance resonators and consequently form a triplet coupling scheme. The equivalent circuit model is analyzed in detail, which shows that there is a transmission zero in the low stopband. Based on that concept, three microstrip filters are designed, fabricated and measured, respectively. The first filter has no source/load coupling and only one transmission zero is created. By introducing source/load coupling, the second filter can create three transmission zeros. The third filter can create a controllable transmission zero in upper stopband. The simulated and measured results agree very well.

Place, publisher, year, edition, pages
2011. Vol. 19, 93-106 p.
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:kth:diva-59217DOI: 10.2528/PIERC10092706Scopus ID: 2-s2.0-79952235403OAI: oai:DiVA.org:kth-59217DiVA: diva2:475402
Note
QC 20120113Available from: 2012-01-10 Created: 2012-01-10 Last updated: 2013-11-19Bibliographically approved

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Norgren, MartinHe, Sailing

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