Effect of parasitic patch configurations on multi-banding of microstrip antenna

This paper presents a technique to get multi band in a microstrip patch antenna. It involves introducing four parasitic patches one by one in the antenna. At first, an antenna using inset feed (with dimensions in mm, x: 4.89, y: 37.495, z: 3.2) is designed for a frequency of 5.4 GHz. It is followed by introducing one, two, three and four parasitic patches one by one; their individual gain and bandwidth is calculated. Both the bandwidth and gain are found to increase with increase in the number of parasitic patches. CST studio is used as the software to simulate the antennas. A Duroid substrate having dimensions 56 mm×84 mm×1.6 mm is used as the base of antenna, giving its volume to be 7.526cm³.