Waveguide-microstrip transition for 60 GHz frequency band

In this paper the design of waveguide-to-microstrip transition for 60 GHz frequency band is considered. The design is made using standard printed-circuit technique and allows a direct connection of the WR-15 waveguide without additional modifications in the structure of a waveguide. The parameters of the transition confirmed by the experimental measurements are 11.5% frequency bandwidth (at -10 dB level of the reflection index) and insertion loss less than 1.5 dB.