Surface Waves Suppression in a Biaxially Anisotropic Metamaterial Grounded Slab

In this paper, we have investigated specific conditions for suppression of transverse electric (TE) and transverse magnetic (TM) surface waves in a biaxially anisotropic metamaterial grounded slab. Ordinary and evanescent surface waves, which evanescent only in the air and both in the air and inside the slab respectively, are considered for TE and TM polarizations. On the basis of the graphical solution of dispersion equations, we have presented conditions which surface waves are eliminated. Consequently, this structure may be useful as a substrate for planar antennas.