Radial line slot array optimization

Recently a growing interest has arisen about radial line slot array (RLSA) antennas (Fig.1) which appear to be simple and low-cost solutions for applications at high microwaves and millimeter waves. High-gain radial line slot array (RLSA) antennas are more and more used in wireless LANs, DBS reception, and collision avoidance radar systems in millimeter-wave band [1]–[3].