Antenna device and communication device

Abstract

Disclosed is an antenna device wherein a coupling electrode can be freely disposed without being limited by the position where a transmitting/receiving circuit maintaining excellent connectivity is disposed, while achieving a high production efficiency. The antenna device is provided with: a printed board wherein ground (2) is formed on one surface, and a signal line (3) having signals transmitted thereto is formed on the other surface, with a base material (4) between the ground and the signal line; the coupling electrode (8), which is composed of a conductor having substantially a flat surface, and which performs communication by being coupled, by electromagnetic field coupling, with the electrode of other antenna device disposed on a position facing the coupling electrode; and an electrode post (7) which electrically connects together the signal line (3) formed on the printed board, and the coupling electrode (8) by having the signal line and the printed board at a predetermined interval in the direction of the thickness of the printed board. A connecting terminal section (9) that can be electrically connected with the transmitting/receiving device, which performs signal transmission/reception processing, is formed on one end of the signal line (3), and at least a terminal forming section (1a), which has the connecting terminal section (9) formed thereon, has flexibility in the printed board.

Description

technical field [0001] The present invention relates to an antenna device for performing information communication through electromagnetic field coupling between a pair of opposing electrodes, and a communication device incorporating the antenna device. [0002] This application claims priority on the basis of Japanese Patent Application No. Japanese Patent Application No. 2010-021518 for which it applied in Japan on February 2, 2010, and takes in this application by referring this application. Background technique [0003] In recent years, systems for wirelessly transmitting data such as music and images between electronic devices such as computers and small mobile terminals have been developed without cables or media. Among such wireless transmission systems, there is a wireless transmission system capable of high-speed transmission of up to about 560 Mbps at a short distance of several centimeters. Among such transmission systems capable of high-speed transmission, Trans...

AI Technical Summary

Problems solved by technology

[0007] However, as in the communication device described in Patent Document 1, the transceiver circuit assembled by surface mounting and the three-dimensionally configured high-frequency coupler are arranged on the same printed circuit board. From the viewpoint of the mounting process, there are complicated steps and problems. It is also necessary to pay attention to the problem of deterioration of production efficiency in operation

In addition, for the communication device described in Patent Document 1, a high-frequency coupler is separately produced, and the coupling electrode is arranged more freely without being restricted by the arrangement position of the transceiver circuit. Connecting to the transceiver circuit requires a connection device such as a connection cable in addition to the printed circuit board, and there is a problem of adding parts or processes.

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