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.
Zhang et al. (Sun,) studied this question.
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