A Wideband Magnetic Dipole Antenna With an Artificial Magnetic Conductor Reflector and Its Wide‐Angle Scanning Phased Array

ABSTRACT Wideband and compact phased arrays are widely used in communication systems because of their wide‐angle scanning capabilities. This paper presents a wideband wide‐angle scanning phased array composed of eight compact magnetic dipoles and an artificial magnetic conductor (AMC) reflector. The magnetic dipoles, fed by tapered L‐probes, achieve a fractional bandwidth of 45.3% (1.76–2.79 GHz) while maintaining a compact size of 0.188 λ 0 × 0.188 λ 0 at 2.25 GHz. The AMC reflector improves the front‐to‐back ratio (FBR) by 10 dB because it suppresses the backward radiation. The phased array is constructed with an element spacing of 0.42 λ 0 to suppress grating lobes. Measured results demonstrate a maximum scanning range of ± 65° within a 34.8% fractional bandwidth (1.85–2.63 GHz), with a gain fluctuation less than 3 dB and a peak gain up to 13.2 dBi. The performance and compactness of the array ensure its suitability for wide‐angle scanning applications.