Three-port E-plane bifurcated waveguide power divider at millimeter-wave frequencies

The function of power divider is to divide to power from one input port into the divided power at multiple output ports, or to combine the power from multiple ports into the combined power at one output port. The goal of this study is to design a millimeter-wave power divider operating at the range from 32 GHz to 34 GHz. The return loss at each port and the isolation between from output ports are required to be greater than 15 dB. The insertion loss need to be less than 3.1 dB. The concept of E-plane bifurcated waveguide is proposed to implement this millimeter-wave power divider because of the concerns about operation at high-frequencies and high-power handling, capacity. A resistive film is placed inside the bifurcated waveguide in order to meet the specifications of the proposed power divider. In addition, impedance transformation is employed at output ports to convert the output waveguide to standard waveguide.