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A Low-Loss and High-Bandwidth Horizontally Polarized Transition Between Rectangular Polymer Dielectric Waveguide and Microstrip Line for Array Application
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A Low-Loss and High-Bandwidth Horizontally Polarized Transition Between Rectangular Polymer Dielectric Waveguide and Microstrip Line for Array Application
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Journal Article
A Low-Loss and High-Bandwidth Horizontally Polarized Transition Between Rectangular Polymer Dielectric Waveguide and Microstrip Line for Array Application
2025
Overview
To achieve interconnects of rectangular polymer dielectric waveguides (PDWs) at the W-band, this paper presents a novel low-loss and high-bandwidth horizontally polarized transition between a rectangular PDW and a microstrip line (ML), which can achieve a rectangular PDW array. The proposed structure consists of a patch, a bent ridge waveguide, a tapered ridge waveguide, a dielectric-filled waveguide, and a tapered horn. An equivalent circuit model is established for synthesis design, and the transition is manufactured utilizing printed circuit board (PCB) and computerized numerical control (CNC) technologies. A rectangular PDW interconnect with two designed transitions is constructed and experiments are conducted. The measured results indicate that the rectangular PDW interconnect with two transitions operates within a frequency range (|S11| < −10 dB) of 81.9–108.2 GHz, and the insertion loss of the transition is 0.51–2.01 dB in this frequency range. Then, the designed transition is used to achieve a rectangular PDW array with two rectangular PDWs and two transitions, which has a far-end crosstalk (FEXT) of −55.4 to −21.7 dB in the frequency range of 78.1–110 GHz.
Publisher
MDPI AG
Subject
