ACHIEVING LARGE EFFECTIVE APERTURE ANTENNA WITH SMALL VOLUME BASED ON COORDINATE TRANSFORMATION

The size of an antenna should be relatively large in order to get high radiation directivity. However, in some applications, the antenna is restricted in small region, while high directivity is still required. In this paper, we propose the method of realizing antennae with large effective apertures using arbitrary shaped small PEC reflectors and small volumes of left-handed materials based on coordinate transformation. Using this method, antennae with effective large parabolic apertures are designed using both a small parabolic reflector and a planar reflector. This design method is validated by the numerical simulations based on the Finite Element Method (FEM).