Dual-Band Wilkinson Divider With Coupled Output Port Extensions

A new Wilkinson power divider structure is proposed for the dual-band operation. The proposed divider has two output ports extended and coupled through a coupled line section. The use of coupled output port extensions eliminates the need of the input port extension for the dual-band operation and simplifies the overall divider structure. It also provides the improved frequency performance over a wide range of band ratios with practical design parameters and has some potential for the broadband operation for small band ratios.