Broadband E-plane Wide-angle Scanning Phased Array Base on V-shaped Structrure Above Cavity

This manuscript presents a E-plane wide-angle scanning phased array based on a V-shaped radiating element above a cavity with corrugated ground. Meanwhile, an extra stub is introduced halfway of the feeding structure to improve impedance matching. An 8-element array is constructed to demonstrate the scanning ability as well as impedance matching. The simulated results show that the antenna can achieve −10dB impedance band within 12.2-14GHz. The 8-element array can scan up to 68° with low gain fluctuation and low side lobe level. The simulated active reflection coefficients can still remain below −10dB when scanning up to 63°. The proposed antenna shows great potential in wide-angle phased array applications.