CORE FOR ANTENNA, COIL ANTENNA, CLOCK, PORTABLE TELEPHONE, AND ELECTRONIC APPARATUS

CORE FOR ANTENNA, COIL ANTENNA, CLOCK, PORTABLE TELEPHONE, AND ELECTRONIC APPARATUS

PROBLEM TO BE SOLVED: To provide a core for an antenna and a coil antenna which are excellent in impact resistance and manufacturability, and are inexpensive. SOLUTION: The coil antenna for transmission includes a core 1 made from an insulating soft magnetic material, and a coil 2 of 10T turn on an...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: SATO MITSUHARU, KATO YOSHIHIKO, TEJIMA MAKOTO
Format: Patent
Sprache:eng
Schlagworte:
ANTENNAS, i.e. RADIO AERIALS
BASIC ELECTRIC ELEMENTS
ELECTRICITY
INDUCTANCES
MAGNETS
SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
TRANSFORMERS
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Zusammenfassung:PROBLEM TO BE SOLVED: To provide a core for an antenna and a coil antenna which are excellent in impact resistance and manufacturability, and are inexpensive. SOLUTION: The coil antenna for transmission includes a core 1 made from an insulating soft magnetic material, and a coil 2 of 10T turn on an outer peripheral face of the core 1. The insulating soft magnetic material includes a soft magnetic material powder and an organic binder. The insulating soft magnetic material has magnetic permeability frequency characteristics in which the value of the real part μ' of complex magnetic permeability is ≥20 at frequency of 10 MHz or less, while the value of an imaginary part μ" is ≥10 at frequency of ≥10 MHz. COPYRIGHT: (C)2006,JPO&NCIPI