Single Layer Dual Circularly Polarized Antenna Array Based on Ridge Gap Waveguide for 77 GHz Automotive Radar
Journal article, 2022
A single layer 77GHz dual circularly polarized (CP) antenna array is proposed based on ridge gap waveguides (RGW) technology. The antenna consists of eight U-shaped slots, fed by two feeding networks for generation of dual CP. The proposed antenna array has been fabricated and measured. The experimental results show good agreement with the simulations. The axial ratio is below 2 dB, and the return loss and port isolation are better than 13 dB and 18.6 dB over 76-81 GHz, respectively. The measured gain for the integrated array is 14.8 dBi at the center frequency of 78.5 GHz. With integration of feeding networks and the radiating elements in a single layer, this antenna has potential to be used in automotive radars.
Radar
Antenna arrays
single layer
Automotive engineering
ridge gap waveguide (RGW)
Antennas
Radar polarimetry
Antenna feeds
automotive radar
Dual circular polarization
Radar antennas
Author
Zhaorui Zang
Chalmers, Electrical Engineering, Communication, Antennas and Optical Networks
Ashraf Uz Zaman
Chalmers, Electrical Engineering, Communication, Antennas and Optical Networks
Jian Yang
Chalmers, Electrical Engineering, Communication, Antennas and Optical Networks
IEEE Transactions on Antennas and Propagation
0018-926X (ISSN) 1558-2221 (eISSN)
Vol. 70 7 5977-5982Subject Categories
Other Physics Topics
Communication Systems
Other Electrical Engineering, Electronic Engineering, Information Engineering
DOI
10.1109/TAP.2022.3161283