Effect of Different Substrates on Micro Strip Patch Antenna

Micro strip antennas are planar resonant cavities that leak from their edges and radiate. Printed circuit techniques can be used to etch the antennas on soft substrates to produce low-cost and repeatable antennas in a low profile. The antennas fabricated on compliant substrates withstand tremendous shock and vibration environments. Manufacturers for mobile communication base stations often fabricate these antennas directly in sheet metal and mount them on dielectric posts or foam in a variety of ways to eliminate the cost of substrates and etching. This also eliminates the problem of radiation from surface waves excited in a thick dielectric substrate used to increase bandwidth. A Micro strip patch antenna consists of a radiating patch on one side of a dielectric substrate which has a ground plane on the other side. In this work we are simulating Microstrip patch antenna using three different substrates. The designing has been done in IE3D software which is an EM solver and works on the principle of moments of method. Our main aim is to comparatively study different parameters of antenna such as Return Loss, Bandwidth, Gain, and Directivity & VSWR.