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Compact and Broadband CPW-to-RWG Transition Using 180° Phase Shifter.

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Title: Compact and Broadband CPW-to-RWG Transition Using 180° Phase Shifter.
Authors: Cheng, Yueh-Hsien1, Ko, Chun-An1, Lin, Yi-Chih1, Wang, Chun-Long1 clw@mail.ntust.edu.tw
Source: Progress in Electromagnetics Research C. 2026, Vol. 164, p51-57. 7p.
Subjects: Phase shifters, Coplanar waveguides, Electric impedance, Broadband communication systems, Rectangular waveguides, Reflectance, Electronic equipment
Abstract: In this paper, a compact and broadband 50-Ω coplanar waveguide-to-rectangular waveguide (CPW-to-RWG) transition using a 180◦ phase shifter is proposed. The frequency range, for which the reflection coefficient is smaller than −15 dB, covers the whole Xband (8.2 ∼ 12.4 GHz). In addition to the broadband performance, the transition occupies a small length of 7.37 mm. Furthermore, the characteristic impedance of the coplanar waveguide is 50 Ω, which conforms to the commonly used 50 Ω impedance of radio frequency systems. To further reduce the circuit size, a compact and broadband 50-Ω CPW-to-RWG transition using an inductance-compensated 180◦ phase shifter is proposed. The frequency range, for which the reflection coefficient is smaller than −15 dB, also covers the whole X-band (8.2 ∼ 12.4 GHz). Besides, the transition size is reduced from 7.37 mm to 6.55 mm, which is smaller than a quarter-wavelength. Furthermore, the characteristic impedance of the coplanar waveguide is of the nominal value of 50 Ω. [ABSTRACT FROM AUTHOR]
Copyright of Progress in Electromagnetics Research C is the property of Electromagnetics Academy 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 and Broadband CPW-to-RWG Transition Using 180° Phase Shifter.
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  Data: <searchLink fieldCode="AR" term="%22Cheng%2C+Yueh-Hsien%22">Cheng, Yueh-Hsien</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Ko%2C+Chun-An%22">Ko, Chun-An</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Lin%2C+Yi-Chih%22">Lin, Yi-Chih</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Wang%2C+Chun-Long%22">Wang, Chun-Long</searchLink><relatesTo>1</relatesTo><i> clw@mail.ntust.edu.tw</i>
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  Data: <searchLink fieldCode="JN" term="%22Progress+in+Electromagnetics+Research+C%22">Progress in Electromagnetics Research C</searchLink>. 2026, Vol. 164, p51-57. 7p.
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  Data: <searchLink fieldCode="DE" term="%22Phase+shifters%22">Phase shifters</searchLink><br /><searchLink fieldCode="DE" term="%22Coplanar+waveguides%22">Coplanar waveguides</searchLink><br /><searchLink fieldCode="DE" term="%22Electric+impedance%22">Electric impedance</searchLink><br /><searchLink fieldCode="DE" term="%22Broadband+communication+systems%22">Broadband communication systems</searchLink><br /><searchLink fieldCode="DE" term="%22Rectangular+waveguides%22">Rectangular waveguides</searchLink><br /><searchLink fieldCode="DE" term="%22Reflectance%22">Reflectance</searchLink><br /><searchLink fieldCode="DE" term="%22Electronic+equipment%22">Electronic equipment</searchLink>
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  Data: In this paper, a compact and broadband 50-Ω coplanar waveguide-to-rectangular waveguide (CPW-to-RWG) transition using a 180◦ phase shifter is proposed. The frequency range, for which the reflection coefficient is smaller than −15 dB, covers the whole Xband (8.2 ∼ 12.4 GHz). In addition to the broadband performance, the transition occupies a small length of 7.37 mm. Furthermore, the characteristic impedance of the coplanar waveguide is 50 Ω, which conforms to the commonly used 50 Ω impedance of radio frequency systems. To further reduce the circuit size, a compact and broadband 50-Ω CPW-to-RWG transition using an inductance-compensated 180◦ phase shifter is proposed. The frequency range, for which the reflection coefficient is smaller than −15 dB, also covers the whole X-band (8.2 ∼ 12.4 GHz). Besides, the transition size is reduced from 7.37 mm to 6.55 mm, which is smaller than a quarter-wavelength. Furthermore, the characteristic impedance of the coplanar waveguide is of the nominal value of 50 Ω. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
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  Data: <i>Copyright of Progress in Electromagnetics Research C is the property of Electromagnetics Academy 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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        Value: 10.2528/PIERC25092403
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      – Code: eng
        Text: English
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        PageCount: 7
        StartPage: 51
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      – SubjectFull: Phase shifters
        Type: general
      – SubjectFull: Coplanar waveguides
        Type: general
      – SubjectFull: Electric impedance
        Type: general
      – SubjectFull: Broadband communication systems
        Type: general
      – SubjectFull: Rectangular waveguides
        Type: general
      – SubjectFull: Reflectance
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      – SubjectFull: Electronic equipment
        Type: general
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      – TitleFull: Compact and Broadband CPW-to-RWG Transition Using 180° Phase Shifter.
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            NameFull: Cheng, Yueh-Hsien
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            NameFull: Ko, Chun-An
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            NameFull: Lin, Yi-Chih
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            NameFull: Wang, Chun-Long
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            – D: 01
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              Text: 2026
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              Y: 2026
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            – TitleFull: Progress in Electromagnetics Research C
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