Design of Slotted Triangular Microstrip Patch Antenna with Different Feeding Techniques

In recent years, the microstrip patch antenna (MP A) plans an essential role many application such as satellites, mobile communication and aerospace systems. The microstrip patch antenna has several shapes like circular, triangular, rectangular etc. This paper we present the triangular microstrip patch antenna design. In the previous works of MP A, many researchers have proposed different optimization algorithms to enhance the design of MP A. But they face several problems like narrow bandwidth, very low gain and the high return loss. To avoid these problems we use Northern Goshawk Optimization (NGO) algorithm. Then this NGO algorithm gives the optimize length and sides for the triangular microstrip antenna. And we added the slotted array technique in the triangular MP A, because the slotted technique is capable for avoiding the narrow bandwidth and low gain. Then three feeding techniques such as inset feed, coaxial feed and strip line feed are used in this paper for enhancing the antennas input impedance. The performance of the designed patch antenna with the proposed algorithm is calculated based on the radiation pattern, VSWR, input impedance, return loss, gain and bandwidth. Then the proposed methods experimental result shows the better performance with -29.45 dB return loss and 7.23 dB gain.