Communication terminal apparatus and antenna device
AssigneeMurata Manufacturing Co., Ltd.
InventorsShinichi Nakano, Noboru Kato
Life of this patent
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Abstract
An antenna device which includes a coil conductor and a booster conductor. The coil conductor is defined by wound loop-shaped conductors and includes a first opening at a winding center and two ends connected to a feeding circuit. The booster conductor includes a coupling conductor portion and a frame-shaped radiation conductor portion. The coupling conductor portion includes a second opening overlapped at least partially by the first opening, is split in a portion thereof by a slit, and is electromagnetically coupled to the coil conductor. The frame-shaped radiation conductor portion includes a third opening and is connected to the coupling conductor portion.
Claims10
A communication terminal apparatus comprising:
- an antenna device;
- and
- an electronic apparatus having a different function from a function of the antenna device and that outputs information to the outside or receives information from the outside;
- wherein
- the antenna device comprises:
- a coil conductor defined by a wound loop-shaped conductor and including a first opening at a winding center and two ends which are connected to a feeding circuit;
- and
- a booster conductor including:
- a coupling conductor portion that includes a second opening overlapped at least partially by the first opening, is split in a portion thereof by a slit, and is electromagnetically coupled to the coil conductor;
- and
- a frame-shaped radiation conductor portion that includes a third opening and is connected to the coupling conductor portion;
- the electronic apparatus is arranged so as to output information to the outside or receive information from the outside through the third opening;
- and
- at least a portion of an outer edge of the coil conductor overlaps with an outer edge of the coupling conductor portion.
An antenna device comprising:
- a coil conductor defined by a wound loop-shaped conductor and including a first opening at a winding center and two ends which are connected to a feeding circuit;
- and
- a booster conductor including:
- a coupling conductor portion that includes a second opening overlapped at least partially by the first opening, is split in a portion thereof by a slit, and is electromagnetically coupled to the coil conductor;
- and
- a frame-shaped radiation conductor portion that includes a third opening and is connected to the coupling conductor portion;
- wherein
- at least a portion of an outer edge of the coil conductor overlaps with an outer edge of the coupling conductor portion.
Dependencies are inferred from the claim text.