{"title":"Novel miniaturized bandpass filter with wide stopband using spiral resonator","authors":"Li Gao, Xiu Yin Zhang","doi":"10.1109/IMWS-BIO.2013.6756210","DOIUrl":null,"url":null,"abstract":"A miniaturized bandpass filter with wide stopband is presented in this letter. It utilizes two spiral quarter-wavelength resonators for size reduction. By adding extra lines to the feeding structure, mismatching at harmonic frequencies can be realized and wide stopband can be obtained. To verify the proposed idea, an experimental filter is implemented. The measured results show that better than 25 dB rejection levels in the stopband up to 6.8f<sub>0</sub> are achieved. The circuit area of the filter is only 0.1λ<sub>g</sub>×0.1λ<sub>g</sub>, where λ<sub>g</sub> is the guided wavelength at the operating frequency of 1 GHz.","PeriodicalId":6321,"journal":{"name":"2013 IEEE MTT-S International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications (IMWS-BIO)","volume":"6 1","pages":"1-3"},"PeriodicalIF":0.0000,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2013 IEEE MTT-S International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications (IMWS-BIO)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/IMWS-BIO.2013.6756210","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 1
Abstract
A miniaturized bandpass filter with wide stopband is presented in this letter. It utilizes two spiral quarter-wavelength resonators for size reduction. By adding extra lines to the feeding structure, mismatching at harmonic frequencies can be realized and wide stopband can be obtained. To verify the proposed idea, an experimental filter is implemented. The measured results show that better than 25 dB rejection levels in the stopband up to 6.8f0 are achieved. The circuit area of the filter is only 0.1λg×0.1λg, where λg is the guided wavelength at the operating frequency of 1 GHz.
京公网安备 11010802042870号
京ICP备2023020795号-1
分享
求助内容：
应助结果提醒方式：
扫码关注我们
