Antenna device
AssigneeTDK Corporation
InventorsToshio TOMONARI, Hirohumi Asou, Toshifumi Komachi
Life of this patent
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Abstract
An antenna device is provided with a substrate; an antenna coil formed into a loop-shaped or spiral-shaped on the substrate; a first metallic layer overlapping with a first part of the antenna coil in a planar view; and a second metallic layer overlapping with a second part of the antenna coil different from the first part. The first and second metallic layers are disposed on both sides of a center of an inner diameter portion of the antenna coil in a planar view, respectively. A slit formed between the first and second metallic layers overlaps with the inner diameter portion of the antenna coil in a planar view. At least one of the first and second metallic layers is formed on the substrate together with the antenna coil.
Claims20
An antenna device comprising:
- a substrate;
- an antenna coil formed into a loop-shaped or spiral-shaped on the substrate;
- a first metallic layer overlapping with a first part of the antenna coil in a planar view;
- and
- a second metallic layer overlapping with a second part of the antenna coil different from the first part, wherein
- the first and second metallic layers are disposed on both sides of a center of an inner diameter portion of the antenna coil in a planar view, respectively,
- a slit formed between the first and second metallic layers overlaps with the inner diameter portion of the antenna coil in a planar view, and
- at least one of the first and second metallic layers is formed on the substrate together with the antenna coil.
An antenna device comprising:
- a substrate;
- an antenna coil formed into a loop-shaped or spiral-shaped on the substrate;
- a first metallic layer formed overlapping with a first part of the antenna coil in a planar view;
- and
- a second metallic layer formed overlapping with a second part of the antenna coil different from the first part in a planar view, wherein
- a planar size of the second metallic layer is larger than a planar size of the first metallic layer.
An antenna device comprising:
- a substrate having a first surface and a second surface opposite to each other;
- a coil pattern formed on the first surface of the substrate;
- and
- a planar metal pattern formed on the second surface of the substrate so as to overlap with a part of the coil pattern with an intervention of the substrate.
Dependencies are inferred from the claim text.