volume | PIER Journals

Abstract

This paper presents a single-fed wideband circularly polarized high-gain dielectric resonator antenna (DRA) for KU-band applications. The proposed antenna consists of a cylindrical dielectric resonator on top, a double-layer metasurface structure in the middle, and a feeding substrate at the bottom. An asymmetric X-shaped slot coupling feed on the substrate enables the circular polarization characteristic. The DRA incorporates a double-layer metasurface to broaden the 3 dB axial ratio bandwidth and enhance gain. Simulation results show that the antenna achieves a -10 dB impedance bandwidth of 24.2% (13.69-17.46 GHz), a 3 dB axial ratio bandwidth of 20.01% (14.05-17.2 GHz), with a peak gain of 9.89 dBi. The designed antenna operates in the KU-band and is suitable for wireless communication applications including satellite communications and global positioning systems.

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Dr. Wenhan Wan

Dr. Wu-Sheng Ji

Dr. Zhaoyi Wang

Dr. Xing-Yong Jiang