Figure 4
From: Magnetic field assisted beam-scanning leaky-wave antenna utilizing one-way waveguide

Simulated z-components of the electric fields for the LWA at different frequencies. (a) 8.4 GHz, (b) 8.64 GHz, and (c) 9.25 GHz. The excited source is placed at the center of the air layer in the periodic structure of LWA.