{"title":"Bandpass filters with resistive attenuators being located at 2nd and 4nd spurious pass-bands","authors":"Ming-Yu Hsieh, Shih-Ming Wang, Chi-Yang Chang","doi":"10.1109/EUMC.2004.184130","DOIUrl":null,"url":null,"abstract":"In this paper, a novel resonator consisting of one half-wave transmission line and the resistive attenuator is proposed to build BPF (bandpass filter) with good stop-hand suppression. The resonance characteristics of this type of resonator are intuitive through the ABCD matrix analysis. By means of utilizing the conventional design methodology for parallel coupled-line based BPF, the newly proposed filters can he easily realized by inserting attenuator in coupled-line filter. Tu confirm the validity of the technique, filters of orders-2 BPF centered at 2.25 GHz with a 5% FBW (Fractional Bandwidth) and orders9 BPF centered at 2.05 GHz with a 12% FBW were used. Successfully, filters in this paper revealed the tndsp urious response of at least 30 dB insertion loss.","PeriodicalId":325433,"journal":{"name":"34th European Microwave Conference, 2004.","volume":"140 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2004-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"3","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"34th European Microwave Conference, 2004.","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/EUMC.2004.184130","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
In this paper, a novel resonator consisting of one half-wave transmission line and the resistive attenuator is proposed to build BPF (bandpass filter) with good stop-hand suppression. The resonance characteristics of this type of resonator are intuitive through the ABCD matrix analysis. By means of utilizing the conventional design methodology for parallel coupled-line based BPF, the newly proposed filters can he easily realized by inserting attenuator in coupled-line filter. Tu confirm the validity of the technique, filters of orders-2 BPF centered at 2.25 GHz with a 5% FBW (Fractional Bandwidth) and orders9 BPF centered at 2.05 GHz with a 12% FBW were used. Successfully, filters in this paper revealed the tndsp urious response of at least 30 dB insertion loss.
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