{"title":"基于小尺寸非对称平行耦合线的改进超宽带陷波带带滤波器","authors":"Xinlin Xia, Yingjiang Guo, Xu Cheng, Xianhu Luo","doi":"10.1109/PIERS-Fall48861.2019.9021645","DOIUrl":null,"url":null,"abstract":"This letter presents an improved UWB bandpass filter with sharp selectivity and a notch-band. Its fundamental structure is mainly based on a half-wavelength resonator using asymmetric parallel-coupled line. A center-tapped short-stub is connected at the symmetrical plane of the filter. As a result, two transmission zeros at the lower and upper passband / stopband edges are obtained. Moreover, one open parallel-coupled line is introduced to achieve a notch-band. Measured results indicate that the proposed filter has achieved a bandwidth of 110.6% from 3.05 to 10.6 GHz with a notch-band at 8.5 GHz. In addition, this filter can offer some other advantages such as sharp roll-off and compact size (0.63λg × 0.33λg), which make it attractive for the practical applications in UWB systems.","PeriodicalId":197451,"journal":{"name":"2019 Photonics & Electromagnetics Research Symposium - Fall (PIERS - Fall)","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":"{\"title\":\"An Improved UWB Bandpass Filter with a Notch-band Based on Asymmetric Parallel-coupled Line with Compact Size\",\"authors\":\"Xinlin Xia, Yingjiang Guo, Xu Cheng, Xianhu Luo\",\"doi\":\"10.1109/PIERS-Fall48861.2019.9021645\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"This letter presents an improved UWB bandpass filter with sharp selectivity and a notch-band. Its fundamental structure is mainly based on a half-wavelength resonator using asymmetric parallel-coupled line. A center-tapped short-stub is connected at the symmetrical plane of the filter. As a result, two transmission zeros at the lower and upper passband / stopband edges are obtained. Moreover, one open parallel-coupled line is introduced to achieve a notch-band. Measured results indicate that the proposed filter has achieved a bandwidth of 110.6% from 3.05 to 10.6 GHz with a notch-band at 8.5 GHz. In addition, this filter can offer some other advantages such as sharp roll-off and compact size (0.63λg × 0.33λg), which make it attractive for the practical applications in UWB systems.\",\"PeriodicalId\":197451,\"journal\":{\"name\":\"2019 Photonics & Electromagnetics Research Symposium - Fall (PIERS - Fall)\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2019-12-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"2\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2019 Photonics & Electromagnetics Research Symposium - Fall (PIERS - Fall)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/PIERS-Fall48861.2019.9021645\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2019 Photonics & Electromagnetics Research Symposium - Fall (PIERS - Fall)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/PIERS-Fall48861.2019.9021645","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
An Improved UWB Bandpass Filter with a Notch-band Based on Asymmetric Parallel-coupled Line with Compact Size
This letter presents an improved UWB bandpass filter with sharp selectivity and a notch-band. Its fundamental structure is mainly based on a half-wavelength resonator using asymmetric parallel-coupled line. A center-tapped short-stub is connected at the symmetrical plane of the filter. As a result, two transmission zeros at the lower and upper passband / stopband edges are obtained. Moreover, one open parallel-coupled line is introduced to achieve a notch-band. Measured results indicate that the proposed filter has achieved a bandwidth of 110.6% from 3.05 to 10.6 GHz with a notch-band at 8.5 GHz. In addition, this filter can offer some other advantages such as sharp roll-off and compact size (0.63λg × 0.33λg), which make it attractive for the practical applications in UWB systems.
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