Abstract
Microstrip patch antennas consists of a thin, flat rectangular or circular metallic patch, which is printed on a dielectric substrate, with a ground plane attached to the opposite side of patch upon substrate. The patch is connected to a coaxial cable or a microstrip transmission line and it emits electromagnetic waves into free space. This type of antenna is used in a variety of fields, including wireless communication, radar sensing, medical applications, and military applications. The antennas needed for these applications are lightweight, conveniently mountable, and have a wide bandwidth. The antenna with the microstrip array and with the edge feeding method has been designed. We had improved the antenna characteristics such as return loss, gain and directivity. It has a return loss of 27.9 dB at a resonance frequency of 2.45 GHz and is intended for a gain of 8.60db. The substrate consists of a dielectric material with a permittivity (Ԑr) of 4.4, a thickness of 1.6mm (about 0.06 in) and fed via an edge feed line method with a resistance of about 50 Ohm. This antenna can be applied to S-band applications like radar tracking, Weather updates. The tool we have used to design and evaluate the antenna’s characteristics is HFFS.
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