Integrated Waveguide-to-Microstrip Transition with Power Divider at W-band

An integrated design of waveguide-to-microstrip transition with a power divider at W-band is presented in the article. The transition and power divider is designed on the upper and lower surfaces of a quartz glass substrate. It consists of a matching patch, a resonant patch and a short plane. A microstrip power divider is integrated with the matching patch in the short plane. This makes the proposed design very compact for W-band antenna array applications. The proposed structure is investigated through full-wave simulations. Simulation results show that the integrated transition achieves an impedance bandwidth of greater than 9 GHz when the return loss below −10 dB. In addition, the total transmission loss is less than 0.4 dB in the central frequency.