A Wide-Angle Scanning Phased Array Based on Dual-Mode Pattern-Reconfigurable Dielectric Resonator Antennas

This paper presents a novel wide-angle scanning phased array with dual-mode pattern-reconfígurable dielectric resonator antenna (DRA). The dual-mode rectangular DRA is used as array element, whose radiation pattern can be switched from broadside to a low elevation angle by adjusting the excitation amplitudes and phases of two modes. A 1 × 14 linear array has been designed, and the simulated results are presented. The main beam of the E-plane scanning linear array can scan from -80° to +80° in the frequency band from 6.5 GHz to 7.5 GHz, with a gain fluctuation less than 2.5 dB, and the sidelobe-lobe-level (SLL) has been decreased to the value of -10 dB in the full scanning range.