Abstract
Metamaterials such as left-handed systems and artificial magnetic conductors (AMCs) are very attractive for producing a variety of new functional components. Two major structures for AMCs have been proposed to mimic the magnetic conductor in dual relation to an electric conductor. One has a two-dimensional microstrip patch array with a conducting via connecting the center of each patch to the ground plane, whereas the other has no vias. It is important to elucidate the operation mechanisms of these AMC structures from the viewpoint of not only fundamental physics but also device applications. In this study, we theoretically investigate the basic properties of AMC structures with and without vias. Finite-difference time-domain (FDTD) simulations clarify the mechanism of the plane wave reflection on the AMC surface. The difference between the dispersion characteristics of two AMC structures is investigated in detail.
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