A Broadband E-Band Single-Layer-SIW-to-Waveguide Transition for Automotive Radar

An <inline-formula> <tex-math notation="LaTeX">E </tex-math></inline-formula>-band air-filled rectangular waveguide (RWG) to single thin-layer (0.127 mm) substrate integrated waveguide (SIW) transition is proposed for automotive radar applications. The compact trans...

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Bibliographic Details
Published inIEEE microwave and wireless components letters Vol. 32; no. 6; pp. 523 - 526
Main Authors Zhu, Kaiqiang, Xiao, Yu, Tan, Wenhao, Luo, Hao, Sun, Houjun
Format Journal Article
LanguageEnglish
Published IEEE 01.06.2022
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<italic xmlns:ali="http://www.niso.org/schemas/ali/1.0/" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">E -band
Automotive engineering
Automotive radar
Broadband antennas
Broadband communication
broadband transition
Loss measurement
Radar
Radar antennas
substrate integrated waveguide (SIW)
Substrates
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Summary:An <inline-formula> <tex-math notation="LaTeX">E </tex-math></inline-formula>-band air-filled rectangular waveguide (RWG) to single thin-layer (0.127 mm) substrate integrated waveguide (SIW) transition is proposed for automotive radar applications. The compact transition structure is realized using a symmetric narrow aperture coupled comb patches. With the mutual coupling effect between patches, a bandwidth greater than 22% for <inline-formula> <tex-math notation="LaTeX">|S_{11}| < -15 </tex-math></inline-formula> dB is achieved. A back-to-back prototype is fabricated and measured. The results show that the insertion loss of a single transition is less than 0.5 dB within 71-86 GHz, which covers the whole attractive frequency range for automotive radar. With broadband and compact size, the proposed transition presents potential for automotive radar.
ISSN:1531-1309
1558-1764
DOI:10.1109/LMWC.2022.3140267