A Series-fed Cavity-back Patch Array Antenna for a Miniaturized 77GHz Radar Module

A series-fed cavity-back patch array antenna for a miniaturized 77GHz radar module is presented in this paper. Inherently, the microstrip patch antenna has a wider bandwidth with a thicker substrate. However, a ground coplanar waveguide (GCPW) to feed the patch array antenna has less surface wave ra...

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Published in2019 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting pp. 657 - 658
Main Authors Chao, Chen-Pang, Yang, Shang-Hung, Tung, Chiu-Ming, Yang, Chang-Fa, Lin, Wen-Hsiung, Chai, Chun-Yi, Lin, Ike
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.07.2019
Subjects
77GHz Radar
Antenna arrays
Antenna measurements
Antenna radiation patterns
Bandwidth
Cavity-back
Millimeter Wave
Patch Antenna
Patch antennas
Radar
Radar antennas
Series-fed Array
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Summary:A series-fed cavity-back patch array antenna for a miniaturized 77GHz radar module is presented in this paper. Inherently, the microstrip patch antenna has a wider bandwidth with a thicker substrate. However, a ground coplanar waveguide (GCPW) to feed the patch array antenna has less surface wave radiation loss with a thinner substrate. Therefore, a three-layer cavity-back patch array antenna is proposed to fulfil both requirements. Six 10-element series-fed arrays for the 77GHz radar module with the total dimensions of only 36(L) ×18(W)×7(T) mm 3 are designed. Good radiation properties in a bandwidth from 77 to 81GHz are obtained.
ISSN:1947-1491
DOI:10.1109/APUSNCURSINRSM.2019.8888699