A new millimeter-wave multi-way power dividing/combining network based on waveguide-microstrip E-plane dual-probe structure

This paper presents a new millimeter-wave four-way power dividing/combining network, based on waveguide-microstrip E-plane dual-probe structure. With a good heat sinking property and an easy fabrication process, this compact E-plane dual-probe structure fulfills waveguide-to-microstrip transition and power dividing/combining simultaneously, and has a loss of about 0.2dB in whole Ka-band, indicated by the results of electromagnetic field simulation. Connecting these two dual-probe tri-port networks symmetrically with a waveguide E-T hybrid, a millimeter-wave four-way power dividing/combining network is fabricated, and the measured loss of 0.4dB is obtained in 32GHz-38GHz. With convenience of integrating solid-sate high power MMIC devices, this broadband low loss millimeter-wave four-way symmetric microstrip integrated power dividing/combining network can realize millimeter solid-state high power combining with a high efficiency.