High Performance Single-Ended Wideband and Balanced Bandpass Filters Loaded With Stepped-Impedance Stubs
High-performance single-ended wideband and balanced bandpass filters loaded with steppedimpedance stubs are proposed in this paper. For the proposed wideband filter and the differential mode of the proposed balanced filter, two transmission zeros near the passband are realized by using simple steppe...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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IEEE
2017-01-01
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| Series: | IEEE Access |
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| Online Access: | https://ieeexplore.ieee.org/document/7903676/ |
| _version_ | 1818927900938731520 |
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| author | Yongle Wu Liwei Cui Weiwei Zhang Lingxiao Jiao Zheng Zhuang Yuanan Liu |
| author_facet | Yongle Wu Liwei Cui Weiwei Zhang Lingxiao Jiao Zheng Zhuang Yuanan Liu |
| author_sort | Yongle Wu |
| collection | DOAJ |
| description | High-performance single-ended wideband and balanced bandpass filters loaded with steppedimpedance stubs are proposed in this paper. For the proposed wideband filter and the differential mode of the proposed balanced filter, two transmission zeros near the passband are realized by using simple stepped-impedance stubs, which enhances the passband selectivity of these new filters. The analytical and accurate design equations for transmission poles and zeros of these single-ended and balanced filters are provided based on the scattering-parameters theory. The single-ended bandpass filter, employing a T-shaped structure to produce a wide passband, is achieved with 3-dB fractional bandwidth of 79.33%, 19-dB passband return loss, and 35-dB harmonic suppression (1.56f<sub>0</sub>-2.51f<sub>0</sub>, f<sub>0</sub> is the center frequency of the wide passband). The 3-dB differential-mode fractional bandwidth of 33% with 22-dB passband return loss and the 30-dB harmonic suppression (1.29f<sub>0</sub>-2.67f<sub>0</sub>) are obtained in the proposed balanced bandpass filter. In addition, by inserting open-circuit stubs into the proposed balanced bandpass filter, over 25-dB common-mode suppression is obtained from 0 to 2.67f<sub>0</sub>. Good agreement is observed between the simulation and measurement results. |
| first_indexed | 2024-12-20T03:20:22Z |
| format | Article |
| id | doaj.art-bbfe69010ebb489192236d5f76751e55 |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-12-20T03:20:22Z |
| publishDate | 2017-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-bbfe69010ebb489192236d5f76751e552022-12-21T19:55:14ZengIEEEIEEE Access2169-35362017-01-0155972598110.1109/ACCESS.2017.26952207903676High Performance Single-Ended Wideband and Balanced Bandpass Filters Loaded With Stepped-Impedance StubsYongle Wu0https://orcid.org/0000-0002-3269-7143Liwei Cui1Weiwei Zhang2Lingxiao Jiao3Zheng Zhuang4Yuanan Liu5Beijing Key Laboratory of Work Safety Intelligent Monitoring, School of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing, ChinaBeijing Key Laboratory of Work Safety Intelligent Monitoring, School of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing, ChinaBeijing Key Laboratory of Work Safety Intelligent Monitoring, School of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing, ChinaBeijing Key Laboratory of Work Safety Intelligent Monitoring, School of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing, ChinaBeijing Key Laboratory of Work Safety Intelligent Monitoring, School of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing, ChinaBeijing Key Laboratory of Work Safety Intelligent Monitoring, School of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing, ChinaHigh-performance single-ended wideband and balanced bandpass filters loaded with steppedimpedance stubs are proposed in this paper. For the proposed wideband filter and the differential mode of the proposed balanced filter, two transmission zeros near the passband are realized by using simple stepped-impedance stubs, which enhances the passband selectivity of these new filters. The analytical and accurate design equations for transmission poles and zeros of these single-ended and balanced filters are provided based on the scattering-parameters theory. The single-ended bandpass filter, employing a T-shaped structure to produce a wide passband, is achieved with 3-dB fractional bandwidth of 79.33%, 19-dB passband return loss, and 35-dB harmonic suppression (1.56f<sub>0</sub>-2.51f<sub>0</sub>, f<sub>0</sub> is the center frequency of the wide passband). The 3-dB differential-mode fractional bandwidth of 33% with 22-dB passband return loss and the 30-dB harmonic suppression (1.29f<sub>0</sub>-2.67f<sub>0</sub>) are obtained in the proposed balanced bandpass filter. In addition, by inserting open-circuit stubs into the proposed balanced bandpass filter, over 25-dB common-mode suppression is obtained from 0 to 2.67f<sub>0</sub>. Good agreement is observed between the simulation and measurement results.https://ieeexplore.ieee.org/document/7903676/Widebandbalanced bandpass filterstepped-impedance stubspoles and zerosharmonic suppression |
| spellingShingle | Yongle Wu Liwei Cui Weiwei Zhang Lingxiao Jiao Zheng Zhuang Yuanan Liu High Performance Single-Ended Wideband and Balanced Bandpass Filters Loaded With Stepped-Impedance Stubs IEEE Access Wideband balanced bandpass filter stepped-impedance stubs poles and zeros harmonic suppression |
| title | High Performance Single-Ended Wideband and Balanced Bandpass Filters Loaded With Stepped-Impedance Stubs |
| title_full | High Performance Single-Ended Wideband and Balanced Bandpass Filters Loaded With Stepped-Impedance Stubs |
| title_fullStr | High Performance Single-Ended Wideband and Balanced Bandpass Filters Loaded With Stepped-Impedance Stubs |
| title_full_unstemmed | High Performance Single-Ended Wideband and Balanced Bandpass Filters Loaded With Stepped-Impedance Stubs |
| title_short | High Performance Single-Ended Wideband and Balanced Bandpass Filters Loaded With Stepped-Impedance Stubs |
| title_sort | high performance single ended wideband and balanced bandpass filters loaded with stepped impedance stubs |
| topic | Wideband balanced bandpass filter stepped-impedance stubs poles and zeros harmonic suppression |
| url | https://ieeexplore.ieee.org/document/7903676/ |
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