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This paper aims the design and performance analysis of a compact microstrip patch antenna fed by a direct microstrip line and fabricated on a low-cost FR4 substrate, with a thickness of 0.8mm. The antenna is optimized for single-band opération at 3.5GHz. Simulation results indicate excellent impedance matching, with a reflection coefficient (S11) of –37 dB and an operational bandwidth spanning from 3.2 GHz to 3.7 GHz. The proposed design achieves a peak gain of 2.12 dB while maintaining a compact footprint and a standard impedance of 50 Ω. Owing to its simple geometry, efficient matching, and adequate bandwidth, this antenna is well-suited for applications such as 5G, WiMAX, and compact IoT devices. Furthermore, the analysis of S-parameters and radiation patterns confirms its suitability for the ideal band for the 5G wireless communication.
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DOI: 10.1109/scc66964.2025.11424925
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