Antenna device and electronic apparatus
AssigneeMurata Manufacturing Co., Ltd.
InventorsTsuyoshi MUKAI, Hiromitsu ITO
Life of this patent
Estimating the term…
Abstract
An antenna device includes first and second coils. A portion of the first coil overlaps a coil opening of the second coil, and a portion of the second coil overlaps a coil opening of the first coil. The first coil includes a first coil conductor on a first surface of a base material and a first coil conductor on a second surface. The first coil includes a single-layer portion in which the first coil conductor is only on the first surface of the base material, and the second coil conductor intersects the first coil conductor at a portion facing the single-layer portion on the second surface of the base material.
Claims20
An antenna device comprising:
- a base material including a first surface and a second surface opposed to each other;
- a first coil on the base material and including a first coil conductor and a coil opening;
- and
- a second coil on the base material and including a second coil conductor and a coil opening;
- wherein
- a portion of the first coil overlaps the coil opening of the second coil conductor in a plan view with respect to the base material;
- a portion of the second coil overlaps the coil opening of the first coil conductor in the plan view with respect to the base material;
- the first coil conductor is on the first surface and the second surface;
- the first coil includes a portion in which the first coil conductor on the first surface and the first coil conductor on the second surface overlap each other in the plan view with respect to the base material;
- the first coil includes a first single-layer portion and a second single-layer portion in which the first coil conductor on the first surface and the first coil conductor on the second surface do not overlap each other in the plan view with respect to the base material, and the first coil conductor is only on the first surface of the base material;
- and
- a portion at which the second coil conductor intersects the first coil conductor is a portion of the second surface facing the first single-layer portion and a portion of the second surface facing the second single-layer portion in the plan view with respect to the base material.
An electronic apparatus comprising:
- an antenna device;
- and
- a first system circuit and a second system circuit connected to the antenna device;
- wherein
- the antenna device includes:
- a base material including a first surface and a second surface opposed to each other;
- a first coil on the base material and including a first coil conductor and a coil opening;
- and
- a second coil on the base material and including a second coil conductor and a coil opening;
- a portion of the first coil overlaps the coil opening of the second coil conductor in a plan view with respect to the base material;
- a portion of the second coil overlaps the coil opening of the first coil conductor in the plan view with respect to the base material;
- the first coil conductor is on the first surface and the second surface;
- the first coil includes a portion in which the first coil conductor on the first surface and the first coil conductor on the second surface overlap each other in the plan view with respect to the base material,
- the first coil includes a first single-layer portion and a second single-layer portion in which the first coil conductor on the first surface and the first coil conductor on the second surface do not overlap each other in the plan view with respect to the base material, and the first coil conductor is only on the first surface of the base material;
- and
- a portion at which the second coil conductor intersects the first coil conductor is a portion of the second surface facing the first single-layer portion and a portion of the second surface facing the second single-layer portion in a plan view with respect to the base material.
Dependencies are inferred from the claim text.