A microstrip patch antenna is a popular and easy method used for analysis. The design places a C-shaped slot on a rectangular patch and differentiates the impedance, bandwidth, and gain. The available output size is 2.4 GHz, used for Wi-Fi and Bluetooth applications. The suitable band for S-band frequency. The feed line design and impedance matching network ensures efficient power transfer and good radiation characteristics. Simulation results demonstrate the antenna’s performance in terms of return loss, radiation pattern, and bandwidth, confirming its suitability for Wi-Fi and Bluetooth communication systems. Key Words: Patch antenna, S-band, Feed line.