{"title":"Design of Ultra Wide Octave Electrically Tunable Bandpass Filter for Wireless Communication","authors":"Moli Liu, Yiqun Lin, Sheng-jun Lu","doi":"10.1145/3291842.3291858","DOIUrl":null,"url":null,"abstract":"Electrically tunable bandpass filters are crucial components in wireless communication system. In this paper, a combline filter structure is used to design an electrically tunable filter, whose working frequency range is 200MHz ~ 600MHz. In the entire tuning range, 1dB relative bandwidth is about 12%, the insertion loss is less than 3dB, the input 2rd-order intercept point(IIP2) is more than 60dBm, the input 3th-order intercept point(IIP3) is more than 20dBm, and the input and output voltage standing wave ratio(VSWR) is less than 1.8. The test and simulation results are in good agreement. Finally, we apply this tunable filter to a 20MHz~1350MHz tuned filter bank and achieve good results.","PeriodicalId":283197,"journal":{"name":"Proceedings of the 2nd International Conference on Telecommunications and Communication Engineering","volume":"37 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2018-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings of the 2nd International Conference on Telecommunications and Communication Engineering","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1145/3291842.3291858","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
Electrically tunable bandpass filters are crucial components in wireless communication system. In this paper, a combline filter structure is used to design an electrically tunable filter, whose working frequency range is 200MHz ~ 600MHz. In the entire tuning range, 1dB relative bandwidth is about 12%, the insertion loss is less than 3dB, the input 2rd-order intercept point(IIP2) is more than 60dBm, the input 3th-order intercept point(IIP3) is more than 20dBm, and the input and output voltage standing wave ratio(VSWR) is less than 1.8. The test and simulation results are in good agreement. Finally, we apply this tunable filter to a 20MHz~1350MHz tuned filter bank and achieve good results.
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