The booming demand in wireless communication system applications have caused microstrip patch antennas to attract much interest due to their light weight, comfortable to planar and non-planar surfaces, simple and inexpensive to manufacture using modern printed circuit technology, mechanically robust when mounted on rigid surfaces and when the particular patch shape and mode are selected, they are very versatile in terms of frequency, polarization, pattern and impedance. This paper is to design Microstrip line-fed rectangular antenna, probe-fed rectangular patch antenna, probe-fed circular patch antenna and study the effect of antenna dimensions Length (L), Width (W) and substrate parameters.