Compact dual-band monopole antenna achieves high efficiency in GSM and ISM bands, indicating broad applicability.
A compact dual-band portable antenna operating at 1.8 and 2.4 GHz was designed and implemented for various applications of communication systems, such as wearable and wireless device systems. The dual-band operation of the proposed antenna enables it to be used in a rapidly changing array of applications that meet the demands of modern communication technologies, such as the Global System for Mobiles (GSM) at 1.8 GHz, Digital Communication System (DCS) at 1.71–1.88 GHz, Industrial, Scientific, and Medical (ISM) band at 2.4 GHz, Wi-Fi at 2.4–2.454 GHz, and Bluetooth at 2.4–2.5 GHz. The design is also based on slot technology for miniaturization, achieving dual-band operation, and reducing the unwanted surface currents. The proposed method miniaturizes the antenna while achieving good efficiency in both frequency bands. The preliminary design of the antenna was performed by simulation using the Computer Simulation Technology (CST) Studio Suite, the most advanced electromagnetic simulator. The results indicate excellent radiation efficiency of 92.59% and 96.75% at 1.8 and 2.45 GHz, respectively, as well as gain, S11 ≤ -10 dB, and radiation pattern stability. Consequently, the compact size and high performance of the proposed antenna offers excellent opportunities for wearable or portable devices and other wireless communication systems.
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Algburi et al. (2025) studied this question.
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