volume | PIER Journals

Abstract

A polarization reconfigurable metasurface broadband antenna has been proposed. A 2×2 metasurface was used to achieve circular polarization (CP) characteristics, and four resistors were embedded to achieve linear polarization (LP). Among them, characteristic mode analysis (CMA) was used to discover the CP characteristics of the metasurface. Adding resistors changed the direction of the mode current, which causes CP to switch to LP state. The design results were validated through fabrication and measurement. The measured results show that the impedance bandwidth (IBW) is 21.1%, the axial ratio bandwidth (ARBW) 12.9%, the peak gain (PG) 7.7 dBic at 6.8 GHz in the CP state, its IBW 21.0%, the PG 4.7 dBi at 7.0 GHz in the LP state. The proposed antenna has the characteristics of broadband, polarization reconfigurability, easy processing, and low cost, and its operating frequency can be used in the C-band of wireless communication.

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Dr. Guanghuan Geng

Dr. Zhendong Ding