This paper presents the design and analysis of a center C-shaped dual-band rectangular monopole antenna optimized for Wi-Fi and wireless communication applications. The proposed antenna operates efficiently within the frequency ranges of 1.4-1.8 GHz and 5.2-5.8 GHz, targeting dual-band functionality. The proposed antenna has achieved dual band because it has a rectangular ring with C-shaped cutting on the patch antenna. The compact dimensions of 39 × 50 × 1.6 mm3 designed on FR4 electrodes having a dielectric constant of 4.4 make it suitable for integration into modern wireless devices. The antenna achieves a bandwidth of 10.9% and 25% in the respective frequency bands as a result of the C-shaped resonating cavity. Simulated results demonstrate the antenna's capability to maintain stable gain and omnidirectional radiation patterns across the desired frequencies. The versatility and compactness of this monopole antenna make it an ideal candidate for next-generation Wi-Fi and wireless communication systems.