Abstract:A novel cavity backed planar slot antenna has been described in this paper. Directional performance is realized on the slot antenna by etching a rectangular slot on the SIW (Substrate Integrated Waveguide) which is feed by GCPW (Grounded Coplanar Waveguide). Compared with the conventional slot antenna which integrated with a reflector at a quarter wavelength behind, the profile of the proposed antenna is only 0.029λ0 .The radiation principle of the antenna and the influence of antenna structure parameters on resonant frequency are analyzed in detail.
