A Wide Stopband Tapped Square Split Ring Stepped Impedance Interdigital Bandpass Filter
Hoi-Kai Pang; Kam-Weng Tam; Ruj P, Martins
2004-09
Conference NameProc. IEEE AP/MTT Postgraduate Conference – AP/MTT PGC 2004
Source PublicationThe 5th IEEE (HK/MACAU) AP! MTT Postgraduate Conference
Conference Date2004-9
Conference PlaceUniversity of Macau, Macao, China
Abstract

In this paper, we present a new microstrip stepped impedance interdigital bandpass filter with tapped square split ring resonators (T-SSRR). The quarter wavelength stepped impedance resonators (λ/4-SIR) allow a higher f/fo ratio as compared with the conventional unit impedance resonator (UIR), thus extending the rejection band. Moreover, the T-SSRR which is shown to be a wide band bandstop filter with three transmission zeros, suppress the spurious passband and extend the stopband further. To verify the proposed structure usefulness, two prototype 3rd order λ/4-SIR bandpass lilters, with and without T-SSRR, have been designed at 525MHz with 6.5% bandwidth. Demonstrated is a good spurious suppression of -30dB at ft, and the rejection band is wider than 5.8fo with the fundamental passband almost unaltered.

KeywordMicrostrip Microwave Filter Spurious Response Square Split Ring Resonator Stepped Impedance Resonator
URLView the original
Language英语
Fulltext Access
Document TypeConference paper
CollectionDEPARTMENT OF ELECTRICAL AND COMPUTER ENGINEERING
Affiliation1.Wireless Communication Laborarory, Faculty ofSc\ence and Technology. University of Macau, Talpa, Macao SAR, China
2.on leave from Instituto Superior Tccnlco, Lisbon, Portugal
Recommended Citation
GB/T 7714
Hoi-Kai Pang,Kam-Weng Tam,Ruj P, Martins. A Wide Stopband Tapped Square Split Ring Stepped Impedance Interdigital Bandpass Filter[C],2004.
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