Patch Antenna for ISM Band Application

Abstract

A Rectangular microsrip patch antenna with a semicircular slot is fabricated which is desirable for ISM band applications. The main objective of this antenna is to have less loss and substantial gain. The resonant frequency of this antenna which is at ISM band is 5.8 GHz. Three antennas are been designed. A patch antenna, an array of 2×1 and 2×2 is plotted on the FR4 substrate with the relative permittivity of 4.4. An amount of air gap is kept between the ground plane and the substrate. The software that is used for designing this antenna is IE3D. The designed antenna at 5.8 GHz provides the outcome that gives return loss of −16 dB, −23 dB and −39.9 dB, gain of 5.4 dB, 7.2 dB and 8.9 db, VSWR of 1.02, 1.1 and 1.2 respectively. The size of the antenna is very compact and hence it is easy to fabricate. WiFi, W-LAN, Bluetooth are the applications of ISM Band that is provide by this antenna.