Broadband H-Plan SIW Power Divider with Adjustable Output Powers

Design and realization of a broadband H-plane Substrate Integrated Waveguide (SIW) power divider with equal and unequal output powers is presented. The configuration of the proposed structure is based on the three equal width SIW lines. In proposed SIW power divider septum has been realized with a row of metalized vias. The inclusive input bandwidth in the proposed structures is achieved due to the proper septum design. The output powers are controlled with the septum offset. The parametric analysis shows that the magnitude of outputs could be adjusted with septum offset and the width of SIW could control the cutoff frequency. Power flow from input port toward output port confirm the proposed design concept. Two SIW H-plane power dividers with the same and different outputs have been designed and produced. There are good agreements between simulation and measurement results for both structures. The input impedance bandwidth for equal and unequal prototypes is 3.4 GHz and 2 GHz respectively.