Antenna device and communication terminal device
AssigneeMurata Manufacturing Co., Ltd.
InventorsShinichi NAKANO, Kuniaki YOSUI, Noboru KATO
Life of this patent
Estimating the term…
Abstract
An antenna device includes a first conductor plane and a second conductor plane that face each other. The first conductor plane and the second conductor plane are electrically continuous through a first connection conductor, a second connection conductor, and a chip capacitor. A power feed coil is disposed between the first conductor plane and the second conductor plane. The power feed coil includes a magnetic core and a coil conductor. The coil conductor defines a pattern such that the coil conductor winds around the magnetic core. The power feed coil is disposed at a position closer to the first connection conductor and magnetically couples with the first connection conductor.
Claims5
(canceled)
An antenna device incorporated in electronic equipment, the antenna device comprising:
- a plurality of conductive members including a ground conductor provided in a circuit board in the electronic equipment and a conductor portion of a casing of the electronic equipment;
- a connection conductor that connects the plurality of conductive members;
- a capacitor that defines a looped current path with the plurality of conductive members and the connection conductor;
- and
- an inductor that defines a looped current path with the plurality of conductive members and the connection conductor, and that is provided separately from the plurality of conductive members and the connection conductor;
- wherein
- a resonant circuit is provided that includes the plurality of conductive members, the connection conductor, the capacitor, and the inductor, and a resonant frequency of the resonant circuit is in the HF band and is in a carrier frequency band of communication signals or near the carrier frequency band.
Dependencies are inferred from the claim text.