Hight-gain circular polarised hybrid DRA for millimeter-wave

This paper reports an improved design for a circular polarized antenna with a high gain for indoor millimeter-wave communication operating in the 57-65 GHz band. The circular polarization was obtained by applying two corners truncations to path structure. The antenna structure uses also a new kind of micro-strip to slot transition in order to cover the 60 GHz ISM band. Simulation results show a high gain exceeding 12dBiand a low axial ration over 87.12 % of the operating band and.