volume | PIER Journals

Abstract

In this paper, a novel monopole broadband dual-band antenna design for wireless communication systems is proposed, with its fabrication and experimental validation presented. To significantly enhance impedance matching performance, the antenna employs a T-shaped feed slot resonant structure integrated with symmetric L-shaped radiating patches. It covers critical Sub-6 GHz bands (N41/N77/N78/N79) along with Wi-Fi 5 and Wi-Fi 6 spectrums. Notably, the N41 band, as a core 5G frequency band, possesses advantages such as wide bandwidth, strong penetration capability, and flexible deployment, rendering it ideal for urban coverage and high-speed transmission. Experimental results demonstrate that the antenna achieves a -10 dB impedance bandwidth spanning 2.43-2.72 GHz and 3.31-7.32 GHz, with a peak gain of 5.48 dB under omnidirectional radiation characteristics. Its compact design is suitable for miniaturized terminal devices, exhibiting high practical value in 5G Sub-6 GHz and multi-band wireless communication applications.

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Dr. Zhengting Zhang

Professor Han Lin

Dr. Chenlu Li

Dr. Xiaoyan Wei