Planar left handed lens for plane tem wave excitation in parallel plate slot antennas

摘要

“Metamaterials” are artificially engineered structured materials exhibiting novel properties due to their special architecture and not because of the constituent homogeneous materials used to manufacture them. This enables to deudsign new materials with characteristics not available in conventional materials. A parallel plate slot antenna with a planar “left-handed” lens excited via a coaxial probe is presented in this paper. This new feeding concept excites a TEM plane wave with a relatively uniform field distribution in the parallel plate waveguide and improves the aperture field illumination of the slots. This excitation allows enhancing the efficiency of these kinds of antennas. Some simulation results are presented.