{"title":"Low loss coupled line filters with transmission zeros in multi-layer thin film MCM-D technology","authors":"G. Posada, G. Carchon, B. Nauwelaers, W. De Raedt","doi":"10.1109/MWSYM.2004.1338851","DOIUrl":null,"url":null,"abstract":"This paper presents the design and characterization of high-performance bandpass filters with transmission zeros, integrated in a multi-layer thin film MCM-D technology on high-resistivity Si. A mixed thin-film microstrip/coplanar waveguide transmission line has been used for the realization of the filters, as it presents lower loss than thin-film microstrip lines. The coupled line filters achieve an insertion loss of 2.3 dB at 25 GHz and 1.7 dB at 43 GHz with 3 dB bandwidths of 14% and 18% respectively. The use of transmission zeros provides a close in-band attenuation of more than 30 dB. The used topology allows changing the center frequency and the position of the transmission zeros more or less independently facilitating the design.","PeriodicalId":334675,"journal":{"name":"2004 IEEE MTT-S International Microwave Symposium Digest (IEEE Cat. No.04CH37535)","volume":"53 11","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2004-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"8","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2004 IEEE MTT-S International Microwave Symposium Digest (IEEE Cat. No.04CH37535)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/MWSYM.2004.1338851","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 8
Abstract
This paper presents the design and characterization of high-performance bandpass filters with transmission zeros, integrated in a multi-layer thin film MCM-D technology on high-resistivity Si. A mixed thin-film microstrip/coplanar waveguide transmission line has been used for the realization of the filters, as it presents lower loss than thin-film microstrip lines. The coupled line filters achieve an insertion loss of 2.3 dB at 25 GHz and 1.7 dB at 43 GHz with 3 dB bandwidths of 14% and 18% respectively. The use of transmission zeros provides a close in-band attenuation of more than 30 dB. The used topology allows changing the center frequency and the position of the transmission zeros more or less independently facilitating the design.
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