The present invention is an Ultra-Wideband Biconical Phased Array Antenna System operating from 6 GHz to 18 GHz. It uses biconical radiating elements arranged in a phased array, integrated with a convex planar lens and enclosed within a protective radome. The biconical design ensures wideband performance, while the convex lens, with a focal length of 35 mm, enhances gain and directivity. Beam steering and multibeam functionality are achieved by controlling the phase and amplitude of signals through 8 feed connectors, enabling dynamic beamforming and simultaneous communication in multiple directions. The radome ensures reliable outdoor operation by providing environmental protection and minimizing signal loss. The antenna system is suitable for applications in radar, satellite communications, and wireless networks, with performance evaluations showing a gain of up to 35.1 dB at 18 GHz, making it ideal for long-range, high-frequency communication.