Abstract: A filter body of a common mode noise filter includes: a non-magnetic body; a first magnetic body and a second magnetic body sandwiching the non-magnetic body; and a first coil conductor and a second coil conductor of planar shape which are embedded in the non-magnetic body and positioned on the first magnetic body side and second magnetic body side in the non-magnetic body in a manner facing each other in a non-contact state; and also has a non-magnetic first protective part and second protective part which are made of a non-magnetic material whose strength is higher than the first magnetic body and second magnetic body and which are positioned on the outermost side of the filter body in a manner sandwiching the first magnetic body and second magnetic body.

Abstract: A multilayer power splitter includes a laminate contains two transformers, wherein the inductance ratio of the primary side and secondary side of the first transformer is adjusted to 4:1, whereas the inductance ratio of the primary side and secondary side of the second transformer is adjusted to 1:1. An input port is branched into two for inputting to the primary side and secondary side of the first transformer in opposite phases, with one output made from the first output port. The other output from the first transformer is branched into two for inputting to the primary side and secondary side of the second transformer in opposite phases, with one output made from the second output port and the other output made from the third output port.

Abstract: A multilayer power splitter includes a laminate contains two transformers, wherein the inductance ratio of the primary side and secondary side of the first transformer is adjusted to 4:1, whereas the inductance ratio of the primary side and secondary side of the second transformer is adjusted to 1:1. An input port is branched into two for inputting to the primary side and secondary side of the first transformer in opposite phases, with one output made from the first output port. The other output from the first transformer is branched into two for inputting to the primary side and secondary side of the second transformer in opposite phases, with one output made from the second output port and the other output made from the third output port.

Abstract: A filter body of a common mode noise filter includes: a non-magnetic body; a first magnetic body and a second magnetic body sandwiching the non-magnetic body; and a first coil conductor and a second coil conductor of planar shape which are embedded in the non-magnetic body and positioned on the first magnetic body side and second magnetic body side in the non-magnetic body in a manner facing each other in a non-contact state; and also has a non-magnetic first protective part and second protective part which are made of a non-magnetic material whose strength is higher than the first magnetic body and second magnetic body and which are positioned on the outermost side of the filter body in a manner sandwiching the first magnetic body and second magnetic body.