Patent ID: 9007144
Filing Date: 2015-04-14
Classification: H01F,H03H

Abstract:
1. A multilayer power splitter comprising a laminate constituted by multiple insulator layers stacked together, as well as one input port and three output ports formed on an exterior surface of the laminate, wherein: the laminate contains a first transformer and a second transformer; the first transformer and second transformer are formed in such a way that their primary coils and secondary coils overlap with each other, respectively, in different layers of the laminate and also sandwich an insulator layer in between; the input port is branched into two, and one branch is connected to one end of the primary coil of the first transformer, with the other branch connected to one end of the secondary coil of the first transformer in a phase opposite to the one on the primary side; the other end of the primary coil of the first transformer is connected to the first output port; the other end of the secondary coil of the first transformer is branched into two, and one branch is connected to one end of the primary coil of the second transformer, with the other branch connected to one end of the secondary coil of the second transformer in a phase opposite to the one on the primary side; the other end of the primary coil of the second transformer is connected to the second output port; the other end of the secondary side of the second transformer is connected to the third output port; and an inductance ratio of the primary coil and secondary coil of the first transformer is 4:1, while an inductance ratio of the primary coil and secondary coil of the second transformer is 1:1.