Dual-Polarized SIW-Based Metasurface Leaky-Wave Antenna

Current and next-generations of communication systems demand for high-data rates devices with enhanced coverage and compact dimensions. We present here a dual-polarized, differentially fed, metasurface leaky-wave antenna for dual-polarized and full-duplex applications. The design is based on a slotted substrate-integrated waveguide designed to excite two orthogonal polarizations and to provide differential feeding. The antenna is constituted by a partially reflective surface placed on the top of a dielectric substrate and it operates around 24 GHz, providing satisfactory impedance matching, isolation greater than 50 dB, and maximum realized gain of the order of 18 dBi.