Electromagnetically coupled power divider using parasitic element

This paper describes an electromagnetically coupled microstrip divider that provides high output port isolation and DC cutting. The device consists of a parasitic resonator placed above microstrip patch resonators, achieving tight coupling for both input and output ports. FDTD simulation and measure ments reveal that the device has a high isolation between output ports. Equ al and unequal 2-way and 3-way power dividers are presented in this paper.