A simple multi-port antenna structure is proposed which can be used for direction finding (DF) and beam-forming applications in the receive and transmit modes, respectively. The proposed antenna offers unique functionalities in both receive and transmit modes. For DF applications in the receive mode, the beam-scanning laws of each antenna array is engineered to cover a given sector of space and the back-end of the system will feature a power sensing mechanism to monitor the power received at all ports. In the transmit mode, the proposed antenna can be used for beam-forming applications by engineering the individual port excitation and the antenna sub-arrays. The proposed antenna structure characteristics are demonstrated using full-wave simulations at 58-61 GHz based on circularly polarized slot arrays using substrate integrated waveguide (SIW) technology. Initial results show the antenna features high angle of arrival (AoA) resolution and a wide sector coverage, making it a good candidate for 5G wireless systems.

Additional Metadata
Keywords beam-forming millimeter-wave antennas, beam-scanning, circular polarization, direction finding, directive antennas, sector coverage, slot arrays
Conference 13th European Conference on Antennas and Propagation, EuCAP 2019
Citation
Emara, M.K. (Mohamed K.), King, D.J. (Daniel J.), Nguyen, H. (Hoang), Abielmona, S. (Samer), & Gupta, S. (2019). Multi-port Slot Array Antenna for Millimeter-wave Direction Finding and Beam-forming Applications. In 13th European Conference on Antennas and Propagation, EuCAP 2019.