Reviews of Electromagnetics, Vol. IV, 2025 EuCAP 2025 Special Issue DOI: 10.53792/RoE/2025/25002 Reviews of Electromagnetics EuCAP 2025 Special Issue Metastructure-Enabled Radiation Pattern Unroundness Improvement for Antennas in Complex Electromagnetic...
More
Reviews of Electromagnetics, Vol. IV, 2025 EuCAP 2025 Special Issue DOI: 10.53792/RoE/2025/25002 Reviews of Electromagnetics EuCAP 2025 Special Issue Metastructure-Enabled Radiation Pattern Unroundness Improvement for Antennas in Complex Electromagnetic Environments Zhi Ning Chen1 *, Bo Zhang1 , Huiwen Sheng2 Abstract Radiation pattern roundness is critical for achieving reliable and uniform coverage in wireless communication systems. However, antennas operating in complex environments—such as those mounted off-center on finite platforms or enclosed within dielectric covers—often suffer from pattern distortion due to asymmetric boundary conditions and unwanted guided waves. This paper investigates metastructure-based solutions to mitigate radiation pattern unroundness for both vertically and horizontally polarized antennas. For vertically polarized monopoles, impedance surfaces and Henge-like metarings are designed to suppress edge-diffracted currents and enhance omnidirectionality. Fo
Less
