Dual-channel radiation using a single double-asymmetric periodic leaky-wave antenna

This paper presents a periodic leaky-wave antenna (P-LWA) that is capable of simultaneously radiating two orthogonal polarizations, i.e. of supporting two independent information channels, using a single antenna structure excited at both ends. The development of this P-LWA is based on previous work that identified fundamental relationships between the longitudinal or transversal asymmetries of the periodic unit cell and the radiation properties of the P-LWA. The proposed P-LWA is a double-asymmetric unit-cell structure that combines the properties of single longitudinal and single transverse asymmetric structures to exhibit the aforementioned unique property. It is demonstrated in the particular design of a series-fed patch (SFP) P-LWA.