Date Added: Mar 2012
The rapid development of wireless communication technology has increased the demand for compact microstrip antennas with high gain and wideband operating frequencies. Microstrip patch antennas are very advantageous because of their low cost, low profile, light weight and simple realization process. However, the general microstrip patch antennas have some disadvantages such as narrow bandwidth etc. Enhancement of the performance to meet the demanding bandwidth is necessary. There are numerous and well-known methods to increase the bandwidth of antennas, including increase of the substrate thickness, the use of a low dielectric substrate, slotted patch antenna, the use of various impedance matching and feeding techniques.