Coil antenna
AssigneeMurata Manufacturing Co., Ltd.
InventorsYusuke Suzuki, Kenji Naito, Minoru Sunahara
Life of this patent
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Abstract
A coil antenna having a capacitor that is not separated from a metal terminal or an electrode of a mounting substrate even when a root portion of a bobbin around which a coil is wound is bent by an external force. The coil antenna includes a bobbin; a coil wound around the bobbin; a capacitor connected to the coil; a base made of an insulating material formed integrally with the bobbin; and a mounting substrate having a plate shape with a pair of electrodes formed on a surface of the mounting substrate extended from the base for mounting the capacitor, such that the mounting substrate is held in a cantilevered manner in a winding direction of the coil.
Claims20
A coil antenna comprising:
- a bobbin;
- a coil wound around the bobbin;
- a base comprising an insulating material and coupled to or integrally formed with the bobbin;
- a pair of metal terminals extending from the base;
- and
- a capacitor mounted to the pair of metal terminals and electrically connected to the coil,
- wherein the pair of metal terminals are held in a cantilevered configuration in a winding direction of the coil.
A coil antenna comprising:
- a bobbin;
- a coil wound around the bobbin;
- a base comprising an insulating material and coupled to or integrally formed with the bobbin;
- a mounting substrate having a plate shape with a pair of electrodes disposed on a surface of the mounting substrate;
- and
- a capacitor mounted to the pair of electrodes and electrically connected to the coil,
- wherein the mounting substrate extends from the base and has at least one open edge that is not coupled to either the base or the bobbin.
A coil antenna comprising:
- a bobbin;
- a coil wound around the bobbin;
- a base comprising an insulating material and coupled to or integrally formed with the bobbin;
- a mounting substrate having a plate shape with a pair of electrodes disposed on a surface of the mounting substrate;
- and
- a capacitor mounted to the pair of electrodes and electrically connected to the coil,
- wherein the mounting substrate is structurally configured relative to the base in a configuration that prevents the capacitor from separating from the pair of electrodes when the bobbin is bent relative to the base.
Dependencies are inferred from the claim text.