{"title":"改进上阻带性能的超宽带(UWB)带通滤波器","authors":"Sai‐Wai Wong, Sheng Sun, Lei Zhu, Zhi Ning Chen","doi":"10.1109/APMC.2006.4429372","DOIUrl":null,"url":null,"abstract":"A novel ultra-wideband (UWB) bandpass filter with improved upper-stopband performance is presented and constituted by integrating an initial UWB filter with two lowpass filters at its two sides. Firstly, a multiple-mode resonator is formed with first three resonant frequencies located within the 3.1-10.6 GHz UWB band while its two-side high-impedance sections are excited by two interdigital coupled lines with enhanced coupling degree, leading to make up an initial UWB filter. Secondly, two 3rd- or 5th-order lowpass filters are designed with their cut-off frequency slightly higher than 10.6 GHz (upper-end), aiming at suppressing the spurious upper-passband near the interested UWB passband. Finally, a resultant UWB bandpass filter is optimized, fabricated and measured to give us an evident confirmation on the improved upper-stopband performance.","PeriodicalId":137931,"journal":{"name":"2006 Asia-Pacific Microwave Conference","volume":"115 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2006-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"18","resultStr":"{\"title\":\"Ultra-wideband (UWB) bandpass filters with improved upper-stopband performance\",\"authors\":\"Sai‐Wai Wong, Sheng Sun, Lei Zhu, Zhi Ning Chen\",\"doi\":\"10.1109/APMC.2006.4429372\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"A novel ultra-wideband (UWB) bandpass filter with improved upper-stopband performance is presented and constituted by integrating an initial UWB filter with two lowpass filters at its two sides. Firstly, a multiple-mode resonator is formed with first three resonant frequencies located within the 3.1-10.6 GHz UWB band while its two-side high-impedance sections are excited by two interdigital coupled lines with enhanced coupling degree, leading to make up an initial UWB filter. Secondly, two 3rd- or 5th-order lowpass filters are designed with their cut-off frequency slightly higher than 10.6 GHz (upper-end), aiming at suppressing the spurious upper-passband near the interested UWB passband. Finally, a resultant UWB bandpass filter is optimized, fabricated and measured to give us an evident confirmation on the improved upper-stopband performance.\",\"PeriodicalId\":137931,\"journal\":{\"name\":\"2006 Asia-Pacific Microwave Conference\",\"volume\":\"115 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2006-12-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"18\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2006 Asia-Pacific Microwave Conference\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/APMC.2006.4429372\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2006 Asia-Pacific Microwave Conference","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/APMC.2006.4429372","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Ultra-wideband (UWB) bandpass filters with improved upper-stopband performance
A novel ultra-wideband (UWB) bandpass filter with improved upper-stopband performance is presented and constituted by integrating an initial UWB filter with two lowpass filters at its two sides. Firstly, a multiple-mode resonator is formed with first three resonant frequencies located within the 3.1-10.6 GHz UWB band while its two-side high-impedance sections are excited by two interdigital coupled lines with enhanced coupling degree, leading to make up an initial UWB filter. Secondly, two 3rd- or 5th-order lowpass filters are designed with their cut-off frequency slightly higher than 10.6 GHz (upper-end), aiming at suppressing the spurious upper-passband near the interested UWB passband. Finally, a resultant UWB bandpass filter is optimized, fabricated and measured to give us an evident confirmation on the improved upper-stopband performance.