Microstrip Patch Antenna for IoT Applications

Microstrip patch antennas are widely used in modern wireless communication systems due to their compact size, low profile structure, and ease of fabrication. In recent years, U-slot microstrip patch antennas have gained significant attention because they provide improved bandwidth, multiband operation, and enhanced radiation characteristics. In this research work, a U-slot microstrip patch antenna is designed and analyzed for dual-band wireless communication applications. The antenna operates at 2.4 GHz and 5.8 GHz frequency bands, which are widely used in IoT and wireless communication systems such as Wi-Fi and WLAN. The antenna is designed on an FR-4 substrate with a dielectric constant of 4.4 and a thickness of 1.6 mm. The design parameters, including patch dimensions, feed line configuration, and U-slot geometry, are carefully optimized to achieve efficient radiation performance and stable operation. The introduction of the U-shaped slot plays a crucial role in improving the bandwidth and enabling dual-band functionality without increasing the overall antenna size. The simulated results show good impedance matching with return loss values below −10 dB at both operating frequencies. In addition, the antenna demonstrates stable radiation patterns and satisfactory gain, making it suitable for reliable wireless communication.