In this paper, the simulation analysis of low noise amplifier and rectangular microstrip patch antenna is proposed. In this, two different modules are proposed and analyzed through Agilent ADS tool. Firstly, a rectangular patch antenna is designed that is resonant at approx. 14GHz with micro-strip feeding and simulated in ADS tool and achieves reflection coefficient of -22dB. Secondly, a low noise amplifier using coplanar waveguides as an input-output matching network is analyzed and achieves a gain of 15.7dB and input-output matching of -24 and -12dB respectively with noise figure of 1.5dB.