In this paper, micro strip patch antenna with frequency reconfiguration is designed which produce different radiation pattern without changing the antenna dimensions and used to achieve a greater efficiency. Frequency reconfiguration is achieved by electrical reconfiguration technique which uses the PIN diode that was placed to switch between two frequencies, because, varactor diode acts as a tunable device in RF circuits. Simulation is done by using the HFSS software (High Frequency Simulation Software). Because of compact size it can be used in receiver station of the IRNSS (Indian Regional Navigational Satellite) satellite system.