Design of Millimeter Wave Radar Antenna Array with Flat-top Pattern

In this paper, a planar millimeter wave radar array antenna with flat-top pattern is proposed for wide detection angle. Firstly, the Chebyshev synthesis method is used to design the linear array with high gain and low sidelobe pattern which works in the 24 GHz frequency band. The maximum gain of the...

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Bibliographic Details
Published in:Applied Computational Electromagnetics Society journal 2023-05, Vol.37 (12), p.1186
Main Authors: Wang, Nan, Zhang, Yibo, Gao, Kun, Wu, Jian, Dang, Beijia, Kong, Zhizhan, Wei, Haokun, Gao, Feng, Liu, Shuangyang
Format: Article
Language:English
Subjects:
Antenna arrays
Antennas
Arrays
Automotive radar
Bandwidths
Chebyshev approximation
Design
Electric power
Electricity distribution
Frequencies
High gain
Linear arrays
Millimeter waves
Radar antennas
Radar arrays
Radar detection
Radiation
Sidelobe reduction
Sidelobes
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Summary:In this paper, a planar millimeter wave radar array antenna with flat-top pattern is proposed for wide detection angle. Firstly, the Chebyshev synthesis method is used to design the linear array with high gain and low sidelobe pattern which works in the 24 GHz frequency band. The maximum gain of the linear array is roughly 15 dBi, and the main-sidelobe ratio is close to 20 dB. By setting the excitations and phases distribution of the planar array feeding network, a 5××4 antenna array with a flat-top pattern is obtained. The simulated and measured results show that the radar antenna array has a wide half-power beamwidth of 88 degrees, which can ensure that the automotive radar has a longer detection range and a larger monitoring angle.
ISSN:1054-4887
1943-5711
DOI:10.13052/2022.ACES.J.371201