Abstract
This research introduces the design and simulation of a monopole antenna with a simple ground plane, specifically developed for dual-band communication. The antenna consists of a radiating patch, feed line, and ground plane, and it was fabricated on an FR-4 substrate. The operating frequency bands of the antenna cover 2.5–2.7 GHz and 3.9–4.6 GHz. By carefully selecting the dimensions, the antenna achieves resonance frequencies at 2.6 GHz and 4.2 GHz, with corresponding bandwidths of 200 MHz and 700 MHz. The research provided excellent impedance matching for the antenna, as indicated by the measured return loss (S11) values of -29.35 dB and -22.48 dB, surpassing the required criterion of S11 < -10 dB. The compact size of the antenna, measuring 12×24×1.6 mm³, makes it highly suitable for applications with space limitations. The antenna performance was extensively analyzed through simulations utilizing High-Frequency Structure Simulator (HFSS) software. The results validate its effectiveness for two specific frequency bands:2.6 GHz for mobile broadband service and 4.2 GHz for various applications such as cordless phones, wireless audio devices, and industrial, Scientific, and Medical Networks (ISM). This research lays a solid foundation for future developments in dual-band communication antennas, offering potential benefits in terms of connectivity and communication efficiency.
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