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A novel design of diamond patch shape Microstrip antenna designed and presented, in this paper. The designed antenna has a compact size 15x20x1.575 mm3 with a simple structure consisting of diamond patch shape with a coplanar waveguide (CPW) feed line. The antenna has a very broad bandwidth from 5.5 GHz to 13.5 GHz with a return loss smaller than -10dB over the frequency range of interest. The obtained antenna bandwidth is %84 at the center frequency 9.5 GHz. The antenna has a directional radiation pattern in the E plane with realized gain 4.5 dB. These features, let the antenna to be used for radar and satellite applications.