Novel dual-band bandstop filter with controllable stopband frequencies

This article presents a novel dual‐band bandstop filter (BSF) with controllable stopband frequencies and sharp skirt selectivity.The proposed filter consists of a main transmission line and stub‐loaded resonators coupled to the main line. The stub‐loaded resonator has the advantage that the even‐mod...

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Bibliographic Details
Published inMicrowave and optical technology letters Vol. 54; no. 5; pp. 1203 - 1206
Main Authors Zhang, Xiu Yin, Huang, Xun, Zhang, Hong-Lin, Hu, Bin-Jie
Format Journal Article
LanguageEnglish
Published Hoboken Wiley Subscription Services, Inc., A Wiley Company 01.05.2012
Subjects
bandstop filter
dual-band
frequency control
stub-loaded resonator
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Summary:This article presents a novel dual‐band bandstop filter (BSF) with controllable stopband frequencies and sharp skirt selectivity.The proposed filter consists of a main transmission line and stub‐loaded resonators coupled to the main line. The stub‐loaded resonator has the advantage that the even‐mode resonant frequencies can be flexibly controlled by changing the stub length without affecting the odd‐mode resonant frequencies. Using this configuration, the stopband frequencies can be easily tuned to desired values. Based on the proposed idea, a third‐order dual‐band BSF is implemented operating at 2.4 and 3.5 GHz. Comparisons of experimental and simulated results are presented and good performance is observed. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:1203–1206, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26786
Bibliography:NSFC - No. 61001055; No. U1035002
NCET
Fundamental Research Funds for the Central Universities
istex:18A89A952BBBCE18F9EBA8FFD7C6B2508A9487AA
ark:/67375/WNG-K199JV1Z-W
SCUT
ArticleID:MOP26786
ISSN:0895-2477
1098-2760
DOI:10.1002/mop.26786