GAIN AND BANDWIDTH ENHANCEMENT OF RECTANGULAR PATCH MICROSTRIP ANTENNA

Microstrip antennas are very popular for sending and transmitting electromagnetic waves in many communication systems. The microstrip antenna has advantages and disadvantages, like any other antennas. There many benefits like low weight, low profile planar configuration, low costs of fabrication, and easy to connect with microwave circuits. The patch antenna is suited for applications, which are wireless communications systems, cellular phones, pagers, radar systems, and satellite communications systems. The proposed antenna is designed and simulated via HFSS. The antenna substrate, which is between the two conductors' patch and ground plane, is Duroid of the dielectric constant of epsilon(r) = 2.2 and tangent loss of tan delta = 0.0009, the dimensions are 20 mm for both length and width; the height is 1.5 mm. The patch of sizes is 16 mm and 15 mm for length and width, respectively. In this article the new technique has been introduced to enhance the gain and bandwidth of the rectangular patch microstrip antenna, a new technique is based on creating a patch as a monopole, the parametric study done by varying the parameter delta is the height of the patch concerning the substrate. The gain and bandwidth are increased when the angle between the patch edge and the substrate is increased. While the benefit increased for tilt angle up to 20 degrees and then decreased smoothly with angle increased, the simulated results show a significant change in the gain and bandwidth comparison with traditional rectangular patch microstrip antenna. The results show an increasing tilt angle increased bandwidth and gain. This antenna can be used in the K band for wireless communication applications.