TE20 mode SIW based bi-directional leaky-wave antenna

In this paper, a bi-directional frequency beam-scanning leaky-wave antenna (LWA) using TE20 mode substrate integrated waveguide (SIW) is proposed. 45° tilted radiating slots are etched (based on E-field maxima) on the top wall of TE20 mode SIW power divider. Using a novel microstrip to SIW transition is used to feed the proposed design. The proposed antenna shows a frequency beam scanning range of 54° in each quadrant having the maximum gain of 10.8 dBi within the operating range of 10-11.5 GHz. Full-wave simulations are performed in HFSS.