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A New Balanced Bandpass Filter With Improved Performance on Right-Angled Isosceles Triangular Patch Resonator.

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Title: A New Balanced Bandpass Filter With Improved Performance on Right-Angled Isosceles Triangular Patch Resonator.
Authors: Liu, Qianwen, Wang, Jianpeng, Zhu, Lei, Zhang, Gang, Huang, Feng, Wu, Wen
Source: IEEE Transactions on Microwave Theory & Techniques. Nov2018, Vol. 66 Issue 11, p4803-4813. 11p.
Subjects: Bandpass filters, Right angle, Resonators, Electromagnetic interference, Waveguides
Abstract: A new approach for the design of a balanced bandpass filter (BPF) is presented in this paper. Stemming from the mode degeneration properties of a square patch resonator, a complete set of resonant modes in a right-angled isosceles triangular patch resonator (RAITPR) is thoroughly investigated so as to construct a modified RAITPR with one electric wall and two magnetic walls along its three sides for filter design. This proposed resonator can support the half-TM10-mode of the RAITPR, and thus, it is named as the half-mode RAITPR here. By properly adopting the relationship between one RAITPR and two coupled half-mode RAITPRs, a second-order coupling topology is presented. Its working principle is then explained by using the field distribution of the desired resonant modes involved. A few high-order balanced filters are in final implemented and fabricated to evidently demonstrate their good differential-mode filtering selectivity and high common-mode suppression. Good agreement is achieved between the simulated and measured results for all the designed three balanced BPFs. To further improve the concerned out-of-band rejection performance, the feeding scheme of the modified structure has been discussed. [ABSTRACT FROM AUTHOR]
Copyright of IEEE Transactions on Microwave Theory & Techniques is the property of IEEE and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: A New Balanced Bandpass Filter With Improved Performance on Right-Angled Isosceles Triangular Patch Resonator.
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  Data: <searchLink fieldCode="AR" term="%22Liu%2C+Qianwen%22">Liu, Qianwen</searchLink><br /><searchLink fieldCode="AR" term="%22Wang%2C+Jianpeng%22">Wang, Jianpeng</searchLink><br /><searchLink fieldCode="AR" term="%22Zhu%2C+Lei%22">Zhu, Lei</searchLink><br /><searchLink fieldCode="AR" term="%22Zhang%2C+Gang%22">Zhang, Gang</searchLink><br /><searchLink fieldCode="AR" term="%22Huang%2C+Feng%22">Huang, Feng</searchLink><br /><searchLink fieldCode="AR" term="%22Wu%2C+Wen%22">Wu, Wen</searchLink>
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  Data: <searchLink fieldCode="JN" term="%22IEEE+Transactions+on+Microwave+Theory+%26+Techniques%22">IEEE Transactions on Microwave Theory & Techniques</searchLink>. Nov2018, Vol. 66 Issue 11, p4803-4813. 11p.
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  Data: <searchLink fieldCode="DE" term="%22Bandpass+filters%22">Bandpass filters</searchLink><br /><searchLink fieldCode="DE" term="%22Right+angle%22">Right angle</searchLink><br /><searchLink fieldCode="DE" term="%22Resonators%22">Resonators</searchLink><br /><searchLink fieldCode="DE" term="%22Electromagnetic+interference%22">Electromagnetic interference</searchLink><br /><searchLink fieldCode="DE" term="%22Waveguides%22">Waveguides</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: A new approach for the design of a balanced bandpass filter (BPF) is presented in this paper. Stemming from the mode degeneration properties of a square patch resonator, a complete set of resonant modes in a right-angled isosceles triangular patch resonator (RAITPR) is thoroughly investigated so as to construct a modified RAITPR with one electric wall and two magnetic walls along its three sides for filter design. This proposed resonator can support the half-TM10-mode of the RAITPR, and thus, it is named as the half-mode RAITPR here. By properly adopting the relationship between one RAITPR and two coupled half-mode RAITPRs, a second-order coupling topology is presented. Its working principle is then explained by using the field distribution of the desired resonant modes involved. A few high-order balanced filters are in final implemented and fabricated to evidently demonstrate their good differential-mode filtering selectivity and high common-mode suppression. Good agreement is achieved between the simulated and measured results for all the designed three balanced BPFs. To further improve the concerned out-of-band rejection performance, the feeding scheme of the modified structure has been discussed. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of IEEE Transactions on Microwave Theory & Techniques is the property of IEEE and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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      – Type: doi
        Value: 10.1109/TMTT.2018.2868357
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      – Code: eng
        Text: English
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        PageCount: 11
        StartPage: 4803
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      – SubjectFull: Bandpass filters
        Type: general
      – SubjectFull: Right angle
        Type: general
      – SubjectFull: Resonators
        Type: general
      – SubjectFull: Electromagnetic interference
        Type: general
      – SubjectFull: Waveguides
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      – TitleFull: A New Balanced Bandpass Filter With Improved Performance on Right-Angled Isosceles Triangular Patch Resonator.
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              Text: Nov2018
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