Compact Wideband Wide-Angle Scanning Millimeter-Wave Planar Antenna Array With WAIM

作者：Yu-Qi Ma, Zhi‐Hong Tu, Fu‐Chang Chen · 发表于：IEEE Antennas and Wireless Propagation Letters · 年份：2025 · DOI：10.1109/lawp.2025.3583007 · 被引用次数：3 · 研究领域：Antenna Design and Analysis、Antenna Design and Optimization、Microwave Engineering and Waveguides

This paper proposes a compact millimeter-wave (mmWave) planar antenna array with wideband and wide-angle scanning capabilities. The proposed design incorporates a segmented patch to extend the bandwidth and utilizes metal vias to suppress non-radiative mode. A substrate-integrated back cavity (SIBC) structure is introduced to suppress surface waves, improving wide-angle impedance matching (WAIM) in the E-plane. Additionally, a square-ring meta-surface (SRMS) enhances WAIM in the H-plane. A fabricated 6×6 array demonstrates a bandwidth of 23.16–29.28 GHz (23.3%) and scanning ranges of ±70° in the Eplane and ±60° in the H-plane, providing a viable pathway for compact mmWave systems requiring concurrent wideband and wide-angle scanning.