Effects of slot shape in performance of SIW based Leaky Wave Antenna

The antenna is the foundation of a communication system, and as technology has advanced, the antenna has undergone significant innovation. An antenna is a smart device that may function as a transducer in addition to transmitting and receiving signals. The primary factor influencing the antenna's bandwidth is the slot's shape. It influences its electrical properties like polarization and gain. In this paper, experimental analysis is done for effect of shapes of slots on performance of antenna. The performance is compared in terms of gain, return loss and half power beam width (HPBW). For measuring the effect on antenna parameters, vertical semi-C, round C, horizontal semi-C and horizontal linear shaped slots are formed on upper metal surface. The horizontal linear slots performed better.