Electronic device

A technology of electronic equipment and external equipment, which is applied in branch office equipment, circuits, telephone communications, etc., can solve the problems of substantial reduction and reduction of antenna coil inductance, difficulty in obtaining target characteristics, etc., and achieve the effect of improving characteristics

Active Publication Date: 2016-04-13
DEXERIALS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] These antennas are designed so that the maximum characteristics can be obtained at the target frequency with a single antenna, however, it is difficult to obtain the target characteristics when actually installed in electronic equipment
This is due to the interference (coupling) of the magnetic field components around the antenna with the surrounding metal, etc., and the inductance of the antenna coil is substantially reduced, resulting in a shift in the resonance frequency
In addition, the received signal sensitivity decreases due to the substantial reduction in inductance

Method used

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Embodiment Construction

[0027] Hereinafter, electronic equipment to which the present invention is applied will be described in detail with reference to the drawings. In addition, this invention is not limited to the following embodiment, Various changes are possible in the range which does not deviate from the summary of this invention. In addition, the drawings are schematic, and ratios and the like of respective dimensions may differ from actual dimensions and the like. Specific dimensions and the like should be judged in consideration of the following descriptions. In addition, there may be a part in which the mutual dimensional relationship and / or ratio differs among the drawings.

[0028] [Near Field Communication System]

[0029] The antenna module 1 to which the present invention is applied is installed in electronic devices such as mobile phones to realize short-range wireless communication functions. Specifically, the antenna module 1 of the present invention is applied, such as figure ...

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Abstract

Provided is an electronic device using an antenna module which achieves reductions in size and thickness without impairing the communication characteristic of the antenna module and can be mounted even in a narrowed space. An electronic device is provided with an antenna module (1) comprising an antenna coil (12) wound in a planar shape, and a magnetic sheet (13) overlapping with at least part of the antenna coil (12). The antenna coil (12) is bent, a surface thereof including one side (12a), on which an electric current flows through the antenna coil (12) in the same direction, from a bend (11a), is disposed so as to be near and along a side surface (10a) of an internal structure (10) of a housing, and a surface including the other side (12b) on which an electric current in a direction opposite to that of the electric current flowing on the one side flows is disposed so as to overlap with the magnetic sheet (13). The magnetic sheet (13) is disposed at a position farther from a reader / writer (120) than the other side (12b) of the antenna coil.

Description

technical field [0001] The present invention relates to an electronic device incorporating an antenna module including a loop coil and a magnetic sheet. This application claims priority based on Japanese Patent Application No. Japanese Patent Application No. 2013-176812 for which it applied in Japan on August 28, 2013, and takes in this application by referring this application. Background technique [0002] In recent wireless communication devices, antennas for telephone communication, antennas for GPS, antennas for wireless LAN / BLUETOOTH (registered trademark), and multiple RF antennas such as RFID (Radio Frequency Identification: Radio Frequency Identification) are mounted. In addition, along with the introduction of non-contact charging, a loop coil for power transmission has also begun to be installed. The power transmission method used in the non-contact charging method includes an electromagnetic induction method, a radio transmission method, a magnetic resonance met...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q7/06H01Q1/24H01Q7/00
CPCH01Q7/06H01Q1/2216H01Q1/243H04M1/026
Inventor 折原胜久幸保雅裕
Owner DEXERIALS CORP
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