Piezoelectrics & Acoustooptics, Volume. 47, Issue 2, 287(2025)

Design of a Dual-Band Flexible MIMO Antenna for Wi-Fi 7 Applications

WU Xu1, WANG Qingxiang2, and DU Chengzhu1
Author Affiliations
  • 1College of Electronics and Information Engineering, Shanghai University of Electric Power, Shanghai 200082, China
  • 2Shandong Electric Power Engineering Consulting Institute Co., Ltd., Jinan 250013, China
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    In response to the increasing demands of modern wireless communication systems for high data transfer rates and low latency, this paper presents the design of a dual-band flexible MIMO antenna with coplanar waveguide(CPW) feeding for Wi-Fi 7 applications. The unit antenna achieves dual-band operation by introducing “L”-shaped long branches on the ground plane of a monopole antenna and is printed on an LCP flexible dielectric substrate. By adding two symmetric branches between the two unit antennas, high isolation for the MIMO antenna is achieved. The overall size of the antenna is 50 mm × 32 mm × 0.1 mm, with measured operating frequency bands of 2.38‒2.6 GHz and 4.68‒9.83 GHz. The isolation between antennas is greater than 20 dB across the operating frequency bands, with the envelope correlation coefficient (ECC) less than 0.002 and the diversity gain (DG) greater than 9.999 dB. The specific absorption rate (SAR) values at 2.45 GHz and 6.8 GHz are 1.01 W/kg and 0.87 W/kg, respectively, both below international standards. The results indicate that this antenna shows strong potential for future Wi-Fi 7 applications.

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    WU Xu, WANG Qingxiang, DU Chengzhu. Design of a Dual-Band Flexible MIMO Antenna for Wi-Fi 7 Applications[J]. Piezoelectrics & Acoustooptics, 2025, 47(2): 287

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    Paper Information

    Received: Dec. 23, 2024

    Accepted: Jun. 17, 2025

    Published Online: Jun. 17, 2025

    The Author Email:

    DOI:10.11977/j.issn.1004-2474.2025.02.016

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