Antenna, wireless communication device, wireless communication system, vehicle, motorcycle, and movable body

Patent metadata

Field	Value
Publication number	US-2021036736-A1
Application number	US-201916964177-A
Country	US
Kind code	A1
Filing date	Jan 7, 2019
Priority date	Jan 22, 2018
Publication date	Feb 4, 2021
Grant date	—

Abstract

A wireless communication system includes a first wireless communication device installed on an installation surface of a vehicle and a second wireless communication device. The first wireless communication device includes an antenna and a sensor. The antenna includes a first conductor, a second conductor, one or more third conductors, a fourth conductor, and a feeding line. The first wireless communication device transmits a signal from the antenna to the second wireless communication device, based on information detected by the sensor.

First claim

1 - 5 . (canceled)

6 . An antenna installed on an installation surface of a vehicle, the antenna comprising:
a first conductor and a second conductor opposed to each other in a first axis; one or more third conductors positioned between the first conductor and the second conductor and extending in the first axis; a fourth conductor connected to the first conductor and the second conductor and extending in the first axis; and a feeding line connected to the third conductor, wherein the first conductor and the second conductor are capacitively connected to each other through the third conductor, and a surface of the fourth conductor is opposed to the installation surface of the vehicle in a second axis vertical to the first axis.

7 . The antenna according to claim 6 , wherein
the installation surface of the vehicle is a surface of a member that constitutes the vehicle, and the first axis is substantially parallel to a longitudinal direction of the member.

8 . The antenna according to claim 6 , wherein
the installation surface of the vehicle is an end portion of a surface of a member that constitutes the vehicle, and the first axis is substantially parallel to an outer peripheral line of the member.

9 . A wireless communication device installed on an installation surface of a vehicle,
the wireless communication device comprising an antenna, the antenna comprising:
a first conductor and a second conductor opposed to each other in a first axis;
one or more third conductors positioned between the first conductor and the second conductor and extending in the first axis;
a fourth conductor connected to the first conductor and the second conductor and extending in the first axis; and
a feeding line connected to the third conductor, wherein
the first conductor and the second conductor are capacitively connected to each other through the third conductor, and a surface of the fourth conductor is opposed to the installation surface of the vehicle in a second axis vertical to the first axis.

10 . The wireless communication device according to claim 9 , wherein
the installation surface of the vehicle is a surface of a member that constitutes the vehicle, and the first axis is substantially parallel to a longitudinal direction of the member.

11 . The wireless communication device according to claim 9 , wherein
the installation surface of the vehicle is an end portion of a surface of a member that constitutes the vehicle, and the first axis is substantially parallel to an outer peripheral line of the member.

12 . The wireless communication device according to claim 9 , further comprising a battery configured to supply power to the antenna, wherein
an electrode terminal of the battery is electrically connected to the fourth conductor.

13 . The wireless communication device according to claim 9 , further comprising a sensor and a controller, wherein
the controller transmits a signal from the antenna, based on information detected by the sensor.

14 . A vehicle comprising an antenna,
the antenna comprising:
a first conductor and a second conductor opposed to each other in a first axis;
one or more third conductors positioned between the first conductor and the second conductor and extending in the first axis;
a fourth conductor connected to the first conductor and the second conductor and extending in the first axis; and
a feeding line connected to the third conductor, wherein
the first conductor and the second conductor are capacitively connected to each other through the third conductor, and a surface of the fourth conductor is opposed to the installation surface of the vehicle in a second axis vertical to the first axis.

15 - 32 . (canceled)

Assignees

• Kyocera Corp

Inventors

• Uchimura Hiroshi
• Ikuta Takanori
• Hiramatsu Nobuki
• Kashiwase Susumu
• Nakamata Katsuro
• Yoshikawa Hiromichi
• Hashimoto Sunao
• Fukuoka Yasuhiko

Classifications

• H04B1/18

  Input circuits, e.g. for coupling to an antenna or a transmission line (coupling networks between antennas or lines and receivers independent of the nature of the receiver H03H) · CPC title

• H04B1/0458

  Arrangements for matching and coupling between power amplifier and antenna or between amplifying stages (matching circuits in general H03H) · CPC title

• H01Q1/3233

  particular used as part of a sensor or in a security system, e.g. for automotive radar, navigation systems · CPC title

• H01Q21/065

  Patch antenna array · CPC title

• H01Q19/106

  using two or more intersecting plane surfaces, e.g. corner reflector antennas · CPC title