A Dual‐Polarized Wide‐Angle Scanning Linear Phased Array Antenna With Simple Decoupling Structure

• Published in: Microwave and optical technology letters Vol. 66; no. 11
• Main Authors: Li, Qi‐Qiang, Yang, Yao, Li, Jian‐Ying, Zhou, Shi‐Gang
• Format: Journal Article
• Language: English
• Published: New York Wiley Subscription Services, Inc 01.11.2024
• Subjects: Antenna arrays; Clad metals; Decoupling; decoupling array; Dipole antennas; dual‐polarized antenna; Metal sheets; Microstrip antennas; Mutual coupling; Phased arrays; Reflectance; sampling decoupling structure; wide‐angle scanning phased array
• ISSN: 0895-2477; 1098-2760
• DOI: 10.1002/mop.70026

ABSTRACT A dual‐polarization linear phased array with a simple decoupling structure is designed for wide scanning in this letter. The suggested antenna is made up of two printed dipole antennas that are orthogonally arranged and have a high cross‐polarized isolation. Metal sheets cladding on antenna substrates serve as a decoupling structure, with an array element spacing of 0.48 λ ${\rm{\lambda }}$. A linear phased array of seven elements is fabricated and measured to ensure that the planned array is feasible. The simulated and measured results demonstrate that the phased array can scan its main beam up to ±75° in dual‐polarized excitations at 5.6–6.4 GHz. The co‐polarized mutual coupling is below −28 dB, and the active reflection coefficient of the element is less than −15 dB.