Synthesis of surface reactances using grounded pin bed structure

A thin grounded uniaxial anisotropic slab capable of guiding electromagnetic surface waves was built and its surface reactance was measured at 4.8 GHz for the lowest order TM mode. The structure consists of a lattice of closely spaced thin conducting cylinders embedded in a dielectric with their axes normal to a conducting plane. The theories of propagation in anisotropic media and of artificial dielectrics are used to design the structure and explain its properties.