JP2012191471A5

JP2012191471A5 -

Info

Publication number: JP2012191471A5
Application number: JP2011053834A
Authority: JP
Filing date: 2011-03-11
Publication date: 2014-04-24

Description

前記課題を解決するため、本発明に係るアンテナにあっては、電波を送信又は／及び受信する磁性体にコイルが巻装されているアンテナ本体と、このアンテナ本体の前記コイルが巻装されている一側面に、所定の距離で配置された導電体からなる反射板と、を備えることを特徴とする。 In order to solve the above problems, an antenna according to the present invention includes an antenna body in which a coil is wound around a magnetic body that transmits and / or receives radio waves, and the coil of the antenna body is wound around the antenna body. And a reflecting plate made of a conductor disposed at a predetermined distance on one side surface.

しかして、実施の形態により開示される請求項１記載の発明によれば、電波を送信又は／及び受信する磁性体にコイルが巻装されているアンテナ本体と、このアンテナ本体の前記コイルが巻装されている一側面に、所定の距離で配置された導電体からなる反射板と、を備えることを特徴とするアンテナを提供するので、アンテナの一方側と他方側とで感度
差を持たせることができる。 Thus, according to the first aspect of the invention disclosed by the embodiment, an antenna body in which a coil is wound around a magnetic body that transmits or receives radio waves, and the coil of the antenna body is wound . The antenna is provided with a reflector made of a conductor disposed at a predetermined distance on one mounted side surface, so that there is a difference in sensitivity between one side and the other side of the antenna. be able to.

Claims

An antenna body in which a coil is wound around a magnetic body that transmits and / or receives radio waves;
A reflector made of a conductor disposed at a predetermined distance on one side surface of the antenna body on which the coil is wound ;
An antenna comprising:

In the magnetic body, the width of one opposing surface is wider than the width of the other opposing surface.
A prismatic shape,
2. The antenna according to claim 1 , wherein the reflecting plate has a shape covering one side surface of the antenna body where the magnetic body is wide and both side surfaces continuous with the side surface .

The antenna according to claim 1 or 2 , wherein the antenna body transmits or / and receives radio waves having a frequency in a long wave band .

A communication system that communicates between an on-vehicle device disposed on a vehicle body and a portable device carried by a user, and remotely controls an apparatus provided on the vehicle body from outside the vehicle,
The antenna according to any one of claims 1 to 3 is provided in the in-vehicle device as a communication unit with the portable device,
A communication system, wherein the antenna is arranged so that the antenna body is located on the outside of the vehicle and the reflector is located on the inside of the vehicle.

5. The communication system according to claim 4, wherein the antenna is disposed in a door in which a vehicle outer side is formed of a resin panel and a vehicle inner side is formed of a metal panel.

The antenna is arranged in a door that is molded with metal panels on both the outside and inside of the vehicle,
The communication system according to claim 4, wherein a part of the vehicle outer side panel facing the antenna is formed of a non-conductive member.

A communication system for communicating between an arrangement device arranged in a building and a portable device carried by a user, and remotely controlling an apparatus provided in the building from the outside,
The placement device is provided with the antenna according to any one of claims 1 to 3 as a communication unit with the portable device,
A communication system, wherein the antenna is disposed so that the antenna body is located outside the room and the reflector is located inside the room.

8. The communication system according to claim 7, wherein the antenna is disposed in a door in which an outdoor side is molded with a resin panel and an indoor side is molded with a metal panel.

A communication system for communicating between a first device worn on a user's body and a second device carried by the user, and remotely controlling the first device from the outside,
The antenna according to any one of claims 1 to 3 is provided in the first device as a communication unit with the second device,
A communication system, wherein the antenna is arranged such that the antenna body is located on the outside side and the reflector is located on the body side of the user.

The first device is a wrist watch,
The antenna is disposed in a watch case having a watch glass made of a non-conductive material on the outdoor side and a back cover made of a conductive material in contact with an arm on the body side. 9. The communication system according to 9.

An electronic device having a noise generation source that has an external communication function and affects the communication function,
The antenna according to any one of claims 1 to 3 is provided as a communication means with the outside,
An electronic apparatus, wherein the antenna is disposed such that the antenna body is located on the outside side and the reflector is located on the noise generation source side.

A case having a front cover made of a non-conductive material on one side and a back cover made of a conductive material on the other side facing the one surface,
12. The electronic apparatus according to claim 11 , wherein the antenna is disposed in the case such that the antenna body is located on the front lid side and the reflector is located on the back lid side. .