JP2007243531A5 - - Google Patents

Claims (6)

A first insulating layer; a ground layer formed on the first insulating layer; a first dielectric layer formed on the ground layer; and formed on the first dielectric layer A coil layer having a coil portion; a second dielectric layer formed on the coil layer; an input / output electrode layer having an input / output electrode portion formed on the second dielectric layer; A second insulating layer formed on the output electrode layer, wherein the first and second insulating layers are made of an organic material, and the first and second dielectric layers are made of a dielectric ceramic powder. LC filter composed of a mixture of The LC filter according to claim 1, wherein at least one element of copper, gold, and nickel is used for the coil portion. The LC filter according to claim 1, wherein at least one element of copper, gold, and nickel is used for the input / output electrode portion. The coil portion has a first coil and a second coil, and the first and second coils each have a coil straight portion and a spiral portion, and the coil straight portions of the first and second coils. Are arranged so as to be substantially parallel to each other, and the spiral portion of the first coil is arranged in the direction opposite to the second coil with respect to the coil linear portion of the first coil, and the second coil The spiral portion is disposed in a direction opposite to the first coil with respect to the coil linear portion of the second coil, and the winding direction of the spiral portion of the first coil is the winding direction of the spiral portion of the second coil. 2. The LC filter according to claim 1, wherein the first coil and the second coil are arranged so as to have a substantially line-symmetrical relationship in a direction opposite to the rotational direction. The input / output electrode section has a first input / output electrode and a second input / output electrode, and the first and second input / output electrodes are respectively perpendicular to the first straight line section and the first straight line section. And the first linear portions of the first and second input / output electrodes are arranged so as to be substantially parallel to each other, and the first input / output electrodes of the first input / output electrode are arranged in parallel with each other. The second straight line portion is arranged in a direction opposite to the second input / output electrode with respect to the first straight line portion of the first input / output electrode, and the second straight line portion in the second input / output electrode is The first input / output electrode is disposed in a direction opposite to the first input / output electrode with respect to the first straight line portion of the second input / output electrode, and the first input / output electrode and the second input / output electrode are substantially line symmetrical. The LC filter according to claim 4, which is arranged so as to be in a relation. The coil linear part in the first coil and the first linear part in the first input / output electrode are arranged at opposing positions via the second dielectric layer, and the coil linear part in the second coil and the second linear part The LC filter according to claim 5, wherein the first linear portion of the input / output electrode is disposed at a position opposed to the first linear portion via the second dielectric layer.