Broadband substrate integrated waveguide four-way power divider

This paper presents a broadband four way substrate integrated waveguide power divider with simple and planar feed structure. The proposed power divider has a wide impedance bandwidth of 40% from 4.5GHz to 6.8 GHz. Variation of output level for all output ports and over the entire pass band of the power divider is less than ±0.5 dB.