A Novel Wilkinson Power Divider for Dual-Band Operation

The design and analysis of a dual-band equal-split Wilkinson power divider are presented in this paper. The structure of the power divider and the formulas used to determine the design parameters have been given. The divider has two output ports shifted away from the isolation resistor to the open stub. As a result, the bandwidth can be enhanced obviously for small band-ratios. Closed-form design equations are derived using even- and odd-mode formulation. For verification, a microwave power divider operating at 1 and 2 GHz is fabricated, the experimental results show that the designed power divider fulfills all the features of a conventional Wilkinson power divider, such as an equal power split and impedance matching at ports.