Antenna device

Patent metadata

Field	Value
Publication number	US-2024006751-A1
Application number	US-202318214698-A
Country	US
Kind code	A1
Filing date	Jun 27, 2023
Priority date	Jul 4, 2022
Publication date	Jan 4, 2024
Grant date	—

Abstract

There is provided an antenna device comprising: a chip antenna arranged on a substrate; and a metal element arranged on the same substrate as the chip antenna, wherein the metal element is arranged such that a longitudinal direction of the metal element is vertical with respect to the substrate in a direction in which a current flows in the chip antenna.

First claim

What is claimed is:

1 . An antenna device comprising:
a chip antenna arranged on a substrate; and a metal element arranged on the same substrate as the chip antenna, wherein the metal element is arranged such that a longitudinal direction of the metal element is vertical with respect to the substrate in a direction in which a current flows in the chip antenna.

2 . The antenna device according to claim 1 , wherein the metal element is formed such that a length in the longitudinal direction of the metal element is longer than a specified length determined according to a frequency of a signal transmitted by the chip antenna.

3 . The antenna device according to claim 2 , wherein a distance between the metal element and the chip antenna is longer than 0, and the metal element is arranged close to the chip antenna.

4 . The antenna device according to claim 3 , wherein the metal element is formed and arranged such that a sum of the distance between the metal element and the chip antenna and the length in the longitudinal direction of the metal element is longer than the specified length determined according to the frequency of the signal transmitted by the chip antenna.

5 . The antenna device according to claim 4 , wherein the metal element is formed and arranged such that a sum of the distance between the metal element and the chip antenna and the length in the longitudinal direction of the metal element is longer than one fourth of a wavelength of the frequency of the signal transmitted by the chip antenna.

6 . The antenna device according to claim 2 , wherein a distance between the metal element and a feeding point for supplying electric power to the chip antenna is longer than 0, and the metal element is arranged close to the feeding point.

7 . The antenna device according to claim 6 , wherein the metal element is formed and arranged such that a sum of a distance between the metal element and the feeding point and the length in the longitudinal direction of the metal element is longer than the specified length determined according to the frequency of the signal transmitted by the chip antenna.

8 . The antenna device according to claim 7 , wherein the metal element is formed and arranged such that the sum of the distance between the metal element and the feeding point and the length in the longitudinal direction of the metal element is longer than one fourth of a wavelength of the frequency of the signal transmitted by the chip antenna.

9 . The antenna device according to claim 1 , wherein the metal element is arranged on a face identical to a face of the substrate on which the chip antenna is arranged.

10 . The antenna device according to claim 1 , wherein the metal element is arranged on a face opposite to a face of the substrate on which the chip antenna is arranged.

11 . The antenna device according to claim 1 , wherein
the metal element includes a first metal element arranged on a face identical to a face of the substrate on which the chip antenna is arranged, and a second metal element arranged on a face opposite to the face of the substrate on which the chip antenna is arranged, and the first metal element and the second metal element are arranged at positions opposite to each other about the chip antenna.

12 . The antenna device according to claim 1 , wherein the chip antenna transmits an ultra-wide band signal.

13 . The antenna device according to claim 1 , wherein the antenna device is mounted on a vehicle.

Assignees

• Tokai Rika Co Ltd
• Taiwan Inpaq Electronic Co Ltd
• Toyota Motor Co Ltd

Inventors

• Furuta Masateru
• Fukagai Tadashi
• Kono Yuki
• Kubo Yutaka
• Yamaguchi Taiichi
• Cheng Ta-Fu
• Su Chih-Ming
• Kobayashi Tetsuya
• Ohe Junzou

Classifications

• H01Q1/38 Primary

  formed by a conductive layer on an insulating support {(patch antennas H01Q9/0407; microstrip dipole antennas H01Q9/065; microstrip slot antennas H01Q13/106; transmission line microstrip antennas H01Q13/206; manufacturing reflecting surfaces using insulating material for supporting the reflecting surface  H01Q15/142)} · CPC title

• H01Q11/12

  Resonant antennas · CPC title

• H01Q9/04 Primary

  Resonant antennas · CPC title

• H01Q5/25

  Ultra-wideband [UWB] systems, e.g. multiple resonance systems; Pulse systems · CPC title