CPW- and MSL-to-RWG TE20 Mode Transitions.

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Bibliographic Details
Title:	CPW- and MSL-to-RWG TE20 Mode Transitions.
Authors:	Cheng, Yueh-Hsien¹, Wang, Chun-Long¹ clw@mail.ntust.edu.tw
Source:	Progress in Electromagnetics Research C. 2025, Vol. 162, p188-193. 6p.
Subjects:	Coplanar waveguides, Rectangular waveguides, Microstrip transmission lines, Reflectance, Bandwidths, Theory of wave motion
Abstract:	In this paper, a coplanar waveguide-to-rectangular waveguide TE20 mode transition using an antisymmetric tapered probe is proposed. The transmission coefficient of the TE20 mode is nearly 0 dB, and the reflection coefficient of the coplanar waveguide mode is smaller than -10 dB from 13.48 GHz to 14.7 GHz. In this frequency range, the transmission coefficient of the TE10 mode is smaller than -20 dB while the reflection coefficient of the coupled slotline mode is smaller than -19 dB. Besides, a microstrip line-to-rectangular waveguide TE20 mode transition using an antisymmetric fork is proposed. The transmission coefficient of the TE20 mode is nearly 0 dB, and the reflection coefficient of the microstrip line mode is smaller than -10 dB from 13.34 GHz to 15 GHz. In this frequency range, the transmission coefficient of the TE10 mode is smaller than -20 dB. To verify the simulation results, the coplanar waveguide-to-rectangular waveguide TE20 transition and the microstrip line-to-rectangular waveguide TE20 mode transition are back-to-back fabricated and measured, with the measurement results agreeing well with the simulation ones. [ABSTRACT FROM AUTHOR]
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Database:	Engineering Source

Description
Abstract:	In this paper, a coplanar waveguide-to-rectangular waveguide TE20 mode transition using an antisymmetric tapered probe is proposed. The transmission coefficient of the TE20 mode is nearly 0 dB, and the reflection coefficient of the coplanar waveguide mode is smaller than -10 dB from 13.48 GHz to 14.7 GHz. In this frequency range, the transmission coefficient of the TE10 mode is smaller than -20 dB while the reflection coefficient of the coupled slotline mode is smaller than -19 dB. Besides, a microstrip line-to-rectangular waveguide TE20 mode transition using an antisymmetric fork is proposed. The transmission coefficient of the TE20 mode is nearly 0 dB, and the reflection coefficient of the microstrip line mode is smaller than -10 dB from 13.34 GHz to 15 GHz. In this frequency range, the transmission coefficient of the TE10 mode is smaller than -20 dB. To verify the simulation results, the coplanar waveguide-to-rectangular waveguide TE20 transition and the microstrip line-to-rectangular waveguide TE20 mode transition are back-to-back fabricated and measured, with the measurement results agreeing well with the simulation ones. [ABSTRACT FROM AUTHOR]
ISSN:	19378718
DOI:	10.2528/PIERC25101003