This paper presents design, modeling and simulated characterization of proximity coupled fed circular microstrip patch antenna (PCMPA) where the electromagnetic radiating patch is totally composed of nano thickness (nano meter) film. The nano film is excited through an electromagnetic coupling scheme also known as proximity coupler at 10 GHz. Antenna design and parametric studies have been executed through IE3D version 14.65 simulation software. Simulation result shows enhanced bandwidth and good return loss response of nano film patch antenna over traditional bulk thickness (micro meter) patch antenna. Since, the resonance frequency of this antenna is around 10 GHz; these antennas are suitable for X-band applications such as satellite communication, radar, medical, and other wireless systems.