Microstrip patch antennas represent one family of compact antennas that offer a conformal nature and the capability of ready integration with communication system's printed circuitry. In this paper, a 2.4GHz circular polarization microstrip antenna is designed and simulated. The selected microstrip antenna is a dual - fed circular polarized microstrip antenna. The antenna consists of circular patch and 3 dB hybrid coupler. The dual-fed circular polarized microstrip antenna is etched on a FR4 with dielectric substrate of 4.6 with the height of 1.6mm.