Experimental verification of analytical model for high impedance surfaces

A simple yet accurate analytical model for a high impedance surface comprising an array of capacitive patches over a grounded dielectric slab is experimentally verified. The results are compared for the oblique incidence reflection phase obtained with the analytical model and commercial simulation software with the results of free-space measurements. It is shown that the analytical and simulation results are in very good agreement with the experimental results. To the authors´ knowledge, this is the first time the results of the analytical model in question have been experimentally verified.