Abstract
The very first idea of microstrip antenna was given by G. A. Deschamps in 1953 [1]. However, it did not receive practical exposure until the 1970s and it was further developed by Robert E. Menson [2]. The microstrip antennas are also called patch antennas and abbreviated as MSA. The microstrip antenna has various key advantages due to its low profile, light weight, low cost, and miniaturization capability [3-4]. There are various authentic applications of microstrip antenna such as satellite communication, Radar, WLAN, and WiMAX [5-9]. Nowadays, microstrip antennas are widely used for military and civilian applications such as broadcast radio, television, mobile systems, radio-frequency identification (RFID) system, vehicle guidance system, a global positioning system (GPS), vehicle collision avoidance system, multiple-input multiple-output (MIMO) systems, radar systems, determination of direction, surveillance systems, biological imaging, and missile systems, etc.
Keywords: Directivity, Gain, Patch antenna, Radiation pattern.