Dual-operating band and high-gain planar horn antenna at E-band

A low-profiled dual-band operating planar horn antenna with semi-periodic grooves, is presented. This structure, fed by means of a waveguide, achieves a good gain level at both design frequencies of 60 and 77GHz, clearly improving the simple planar antenna. This enhancing behaviour is similar to the enhanced transmission observed at optical wavelengths used in similar structures, and shares the similar explanation. The antenna is proposed to be used in wireless telecommunication systems, such as a speed radars or short secure radiolinks.