Antenna Design Using Plane Ground and Slotted Ground

A microstrip patch antenna is basically a low-profile antenna used where space is the prime issue. An antenna plays a significant role in wireless communication. With the introduction of wireless technology, the communication between transmitter and receiver became very easy and cheap. In electronic equipment, an antenna can work as a transmitter or receiver, or it can work as both. Nowadays, a variety of antennas have been investigated, and each antenna has its own importance and applications. A four-port compact microstrip antenna, with and without slotting in the ground structure, is presented here to improve the isolation. This antenna is constructed using FR4 substrate. After simulation with CST software, the performance of the proposed antenna is investigated and compared to both structures. An improvement of 2 dB in coupling loss (S41) and a minor improvement in other parameters is found. The various results, like S-parameter, gain, radiation pattern, and envelop correlation coefficient, are calculated and compared for plane ground and slotted ground.