{"title":"Compact microstrip dual-band bandpass filter using short-stub loaded half-wavelength resonator","authors":"MinhTan Doan, W. Che","doi":"10.1109/ATC.2011.6027467","DOIUrl":null,"url":null,"abstract":"A compact microstrip dual-band bandpass filter (BPF) using short-stub loaded half-wavelength resonator is proposed in this paper. By tuning the length and width of short-stub and half-wavelength line, two center frequencies can be easily adjusted to the desired value. Furthermore, new structure of couple-line is introduced to satisfy desired external coupling degree for each band. In this way, the bandwidths of this filter are controllable, while taking good selectivity and improved upper-stopband performance. Two passbands are designed to operate at 2.4 GHz and 3.5 GHz, respectively. A prototype of dual-band bandpass filter is designed and fabricated for demonstration, good agreement is observed between the measured and the theoretical expectation.","PeriodicalId":221905,"journal":{"name":"The 2011 International Conference on Advanced Technologies for Communications (ATC 2011)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2011-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"3","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"The 2011 International Conference on Advanced Technologies for Communications (ATC 2011)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ATC.2011.6027467","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 3
Abstract
A compact microstrip dual-band bandpass filter (BPF) using short-stub loaded half-wavelength resonator is proposed in this paper. By tuning the length and width of short-stub and half-wavelength line, two center frequencies can be easily adjusted to the desired value. Furthermore, new structure of couple-line is introduced to satisfy desired external coupling degree for each band. In this way, the bandwidths of this filter are controllable, while taking good selectivity and improved upper-stopband performance. Two passbands are designed to operate at 2.4 GHz and 3.5 GHz, respectively. A prototype of dual-band bandpass filter is designed and fabricated for demonstration, good agreement is observed between the measured and the theoretical expectation.