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)

Vol. In Press

Subject Categories

Other Physics Topics

Communication Systems

Other Electrical Engineering, Electronic Engineering, Information Engineering

DOI

10.1109/TAP.2022.3161283

More information

Latest update

4/21/2022