Coil component, filter circuit including the coil component, and electronic device
AssigneeMurata Manufacturing Co., Ltd.
InventorAtsushi Toujo
Life of this patent
Estimating the term…
Abstract
An electronic device includes an IC mounted on a substrate and a filter circuit connected to the IC. The filter circuit includes a coil component and a capacitor. The coil component includes a multilayer body, a first coil including a portion of multiple wiring patterns laminated in the multilayer body, a second coil provided on layers different from those of the first coil and including a portion of the multiple wiring patterns, and first, second and third electrodes provided on side surfaces. An opening of the first coil is at least partially overlapped with an opening of the second coil when viewed from a main surface direction. The third electrode is grounded via the capacitor. The first coil has an inductance lower than that of the second coil.
Claims20
An electronic device comprising:
- an integrated circuit mounted on a substrate;
- and
- a filter circuit connected to the integrated circuit;
- wherein
- the filter circuit includes a coil component and a capacitor;
- the coil component includes:
- a body including a pair of main surfaces that are opposed to each other, and four side surfaces with which the main surfaces are connected to each other;
- a first coil including a first plurality of wiring patterns in the body;
- a second coil including a second plurality of wiring patterns in the body;
- a first electrode on a first side surface and electrically connected to one end of the first coil;
- a second electrode on a second side surface opposed to the first side surface and electrically connected to one end of the second coil;
- and
- a third electrode on a third side surface not opposed to the first side surface and electrically connected to the other end of the first coil and the other end of the second coil;
- an opening of the first coil is at least partially overlapped with an opening of the second coil when viewed from a main surface direction;
- the first electrode is connected to the integrated circuit;
- the third electrode is grounded via the capacitor;
- and
- the first coil has an inductance lower than that of the second coil.
A coil component comprising:
- a body including a pair of main surfaces that are opposed to each other and four side surfaces with which the main surfaces are connected to each other;
- a first coil including a first plurality of wiring patterns in the body;
- a second coil including a second plurality of wiring patterns in the body;
- a first electrode on a first side surface and electrically connected to one end of the first coil;
- a second electrode on a second side surface opposed to the first side surface and electrically connected to one end of the second coil;
- and
- a third electrode on a third side surface not opposed to the first side surface and electrically connected to the other end of the first coil and the other end of the second coil;
- wherein
- an opening of the first coil is at least partially overlapped with an opening of the second coil when viewed from a main surface direction;
- and
- the first coil has an inductance lower than that of the second coil.
Dependencies are inferred from the claim text.