Bi-directional Leaky-Wave Antennas with Independent Beam-Scanning Laws

A bi-directional periodic leaky-wave antenna (LWA) is presented for the millimeter-wave (mm-wave) band with suppressed stopband and independent beam-scanning laws for top and bottom sides of the antenna, respectively. The bi-directional slot-pair antenna is designed to radiate out-of-plane beams along two directions on each antenna face. The operation of this antenna is verified using full-wave simulations at a design frequency of 28 GHz. The antenna can be engineered to point high gain beam along specified angles, and can be adapted to provide precision control of the independent output beams in various frequency bands.