Electromagnetic coupled power divider using parasitic element

This paper describes electromagnetic coupled microstrip line divider using a parasitic element for the application of a DC-break function with highly isolated output ports. A parasitic resonator placed above the microstrip patch resonators gives tight coupling of both input port and output ports. The FDTD simulation and measurements show a wide frequency band and high isolation between output ports. We discuss 2-way and 3-way equal/unequal power dividers in this paper.