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US 7,126,548 B2Granted
Electronic device and antenna apparatus
AssigneeCasio Computer Co., Ltd.
InventorsJunro Yano, Soh Kimura, Makoto Sawada
Life of this patent
Estimating the term…
Abstract
In an electronic device having a metal device case, and an antenna disposed inside the device case, a magnetic member having a magnetic permeability higher than a magnetic permeability of the device case is placed between an inner surface of the device case and the antenna.
Claims22
An electronic device comprising:
- a metal device case;
- an antenna disposed inside said device case;
- a magnetic member which is placed between an inner surface of said device case and said antenna, and which has a magnetic permeability that is higher than a magnetic permeability of said device case;
- and
- a flux resilience member which is disposed between said device case and said magnetic member and which has an electric conductivity that is higher than an electric conductivity of said device case and a magnetic permeability that is higher than 1 and lower than said magnetic permeability of said magnetic member.
2 more elements
An electronic device comprising:
- a device case;
- a metal back cover attached to a bottom side of said device case;
- an antenna retained inside said device case;
- a magnetic member which is placed between an inner surface of said back cover and said antenna, and which has a magnetic permeability that is higher than a magnetic permeability of said device case;
- and
- a flux resilience member which is disposed between said back cover and said magnetic member and which has an electric conductivity that is higher than an electric conductivity of said device case and a magnetic permeability higher than 1 and lower than said magnetic permeability of said magnetic member.
3 more elements
An antenna apparatus comprising:
- a metal device case which does not block electric waves;
- an antenna disposed inside said case;
- a magnetic member which is placed one of:
- (i) between an inner surface of said case and said antenna and (ii) at an outer surface of said case, and which has a magnetic permeability that is lower than an effective magnetic permeability of said antenna;
- and
- a flux resilience member is placed between said case and said magnetic member, and which has an electric conductivity that is higher than an electric conductivity of said case and a magnetic permeability that is higher than 1 and lower than said magnetic permeability of said magnetic member.
3 more elements
Dependencies are inferred from the claim text.