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Compact Mixed‐Type Filtering Power Dividers Using Microstrip Asymmetric Coupled‐Lines and Lumped Components.

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Title: Compact Mixed‐Type Filtering Power Dividers Using Microstrip Asymmetric Coupled‐Lines and Lumped Components.
Authors: Xie, Yuqiang1,2,3,4 (AUTHOR), Qi, Zihang1,2,3,4 (AUTHOR) qizihang@bupt.edu.cn, Song, Linying1,2,3,4 (AUTHOR), Li, Xiuping1,2,3,4 (AUTHOR)
Source: Microwave & Optical Technology Letters. Apr2026, Vol. 68 Issue 4, p1-7. 7p.
Subjects: Power dividers, Lumped elements, Resonator filters, Signal processing, Insertion loss (Telecommunication)
Abstract: In this letter, two compact mixed‐type filtering power dividers (FPDs) using microstrip asymmetric coupled‐lines (ACLs) and lumped components are proposed. The frequency mapping of ACLs and lumped components is realized by a modified Richard's transformation, and then the transformation formulas for two types of ACLs and lumped components are derived. Two types of second‐order coupled‐resonator filters with different port impedances are used as prototype for FPDs. Two configurations of the mixed‐type FPDs are demonstrated with different response characteristics. One of them is fabricated using a low‐cost process, demonstrating good performance and the smallest size among reported PDs and FPDs. The center frequency of the FPD is 1.1 GHz with the minimum additional insertion loss of 0.59 dB and a fractional 3‐dB bandwidth of 51%. The upper stopband with attenuation larger than 17.5 dB is from 2.1 to 6.8 GHz. [ABSTRACT FROM AUTHOR]
Copyright of Microwave & Optical Technology Letters is the property of Wiley-Blackwell 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: Compact Mixed‐Type Filtering Power Dividers Using Microstrip Asymmetric Coupled‐Lines and Lumped Components.
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  Data: <searchLink fieldCode="DE" term="%22Power+dividers%22">Power dividers</searchLink><br /><searchLink fieldCode="DE" term="%22Lumped+elements%22">Lumped elements</searchLink><br /><searchLink fieldCode="DE" term="%22Resonator+filters%22">Resonator filters</searchLink><br /><searchLink fieldCode="DE" term="%22Signal+processing%22">Signal processing</searchLink><br /><searchLink fieldCode="DE" term="%22Insertion+loss+%28Telecommunication%29%22">Insertion loss (Telecommunication)</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: In this letter, two compact mixed‐type filtering power dividers (FPDs) using microstrip asymmetric coupled‐lines (ACLs) and lumped components are proposed. The frequency mapping of ACLs and lumped components is realized by a modified Richard's transformation, and then the transformation formulas for two types of ACLs and lumped components are derived. Two types of second‐order coupled‐resonator filters with different port impedances are used as prototype for FPDs. Two configurations of the mixed‐type FPDs are demonstrated with different response characteristics. One of them is fabricated using a low‐cost process, demonstrating good performance and the smallest size among reported PDs and FPDs. The center frequency of the FPD is 1.1 GHz with the minimum additional insertion loss of 0.59 dB and a fractional 3‐dB bandwidth of 51%. The upper stopband with attenuation larger than 17.5 dB is from 2.1 to 6.8 GHz. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
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  Data: <i>Copyright of Microwave & Optical Technology Letters is the property of Wiley-Blackwell 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: 10.1002/mop.70585
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      – Code: eng
        Text: English
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        PageCount: 7
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      – SubjectFull: Power dividers
        Type: general
      – SubjectFull: Lumped elements
        Type: general
      – SubjectFull: Resonator filters
        Type: general
      – SubjectFull: Signal processing
        Type: general
      – SubjectFull: Insertion loss (Telecommunication)
        Type: general
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      – TitleFull: Compact Mixed‐Type Filtering Power Dividers Using Microstrip Asymmetric Coupled‐Lines and Lumped Components.
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            NameFull: Xie, Yuqiang
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            NameFull: Qi, Zihang
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            NameFull: Song, Linying
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            NameFull: Li, Xiuping
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            – D: 01
              M: 04
              Text: Apr2026
              Type: published
              Y: 2026
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              Value: 68
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            – TitleFull: Microwave & Optical Technology Letters
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