In this paper, simulation of rectangular ring micro-strip patch antenna for ultra wideband (UWB) wireless applications is done. The attractiveness of this antenna is that it employs solo patch that makes it easy to fabricate and economical as well. It also mitigates the issue of misalignment. By making use of matching rectangular strips, impedance bandwidth enhancement is also attained. At centre frequency return loss is not more than -10dB. It demonstrates superior radiation characteristics and reasonable gain in the whole operating band. In the designing of proposed antenna, micro-strip feeding is used for power supply purpose. CST Microwave studio suit 10 is used for the simulation purpose of the proposed antenna, which is a 3D electromagnetic field tool for simulation of electromagnetic field in all frequency bands. After simulation of proposed antenna, enhancement in impedance bandwidth of 20.60%, frequency range of 1.8533 GHz, radiation efficiency of 92.51%, and gain of 3.765dbi are obtained.