Compact three-way planar power divider using five-conductor coupled line

In this paper, a planar three-way power divider with compact size is presented using quarter-wave long five-conductor couple line. It is analytically proved that the proposed structure allows the performance of three-way power dividers. Based on the derived equations and simulation, the three-way power divider is designed and measured at 2.0GHz. The measurement shows excellent performance with insertion loss of 0.2 dB, and return loss and isolation better than 20 dB at a design frequency.