An improved Ka-band four-way broadband power divider

This paper introduces a four-way power divider based on the improved radial waveguide with inductive wall and stepped-waveguide at the Ka-band. This structure exhibits broadband (with a stepped-impedance waveguide transformer) and a good agreement in amplitude and phase (with a symmetrical four output port). The EM simulation shows the achievable bandwidth is approximately 20% and the insertion loss of each output port is less than 0.2dB.