Antenna device and communication device

Patent metadata

Field	Value
Publication number	US-12476372-B2
Application number	US-202318207859-A
Country	US
Kind code	B2
Filing date	Jun 9, 2023
Priority date	Jun 10, 2022
Publication date	Nov 18, 2025
Grant date	Nov 18, 2025

Abstract

There are provided an antenna device and a communication device including: a board including a metamaterial layer, a ground layer, and a first layer disposed on a side opposite to the ground layer across the metamaterial layer; a first resonator to which power is fed, the first resonator being provided in the first layer; and a second resonator including two conductors provided along a longitudinal direction of the first resonator, the conductors being provided on the first layer and on both sides of the first resonator in a short direction of the first resonator. The two conductors of the second resonator have end portions, and one terminal of each of the end portions is connected to the ground layer.

First claim

What is claimed is:

1 . An antenna device comprising:
a board including a metamaterial layer, a ground layer, and a first layer disposed on a side opposite to the ground layer across the metamaterial layer; a first resonator to which power is fed, the first resonator being provided in the first layer; and a second resonator including two conductors provided along a longitudinal direction of the first resonator, the two conductors of the second resonator being provided on the first layer and on both sides of the first resonator in a short direction of the first resonator, wherein the two conductors of the second resonator have end portions, and one terminal of each of the end portions is connected to the ground layer, the first resonator includes two conductors, and the power is fed to one of the two conductors of the first resonator, and another of the two conductors of the first resonator is connected to the ground layer.

2 . The antenna device according to claim 1 , wherein
the end portions of the two conductors of the second resonator on a side connected to the ground layer are located on opposite sides in the longitudinal direction.

3 . The antenna device according to claim 1 , wherein
the end portions of the two conductors of the second resonator on a side connected to the ground layer are located on a same side in the longitudinal direction.

4 . The antenna device according to claim 1 , wherein
a length of the second resonator in the longitudinal direction is a half wavelength of an output radio wave of the antenna device.

5 . A communication device comprising:
an antenna device comprising:
a board including a metamaterial layer, a ground layer, and a first layer disposed on a side opposite to the ground layer across the metamaterial layer;
a first resonator to which power is fed, the first resonator being provided in the first layer; and
a second resonator including two conductors provided along a longitudinal direction of the first resonator, the two conductors of the second resonator being provided on the first layer and on both sides of the first resonator in a short direction of the first resonator, wherein
the two conductors of the second resonator have end portions, and one terminal of each of the end portions is connected to the ground layer, and the first layer is located on a front surface side of the communication device, and the ground layer is located on a back surface side of the communication device.

6 . The antenna device according to claim 5 , wherein
the end portions of the two conductors of the second resonator on a side connected to the ground layer are located on opposite sides in the longitudinal direction.

7 . The antenna device according to claim 5 , wherein
the end portions of the two conductors of the second resonator on a side connected to the ground layer are located on a same side in the longitudinal direction.

8 . The antenna device according to claim 5 , wherein
the first resonator includes two conductors, and the power is fed to one of the two conductors of the first resonator, and another of the two conductors of the first resonator is connected to the ground layer.

9 . The antenna device according to claim 5 , wherein
a length of the second resonator in the longitudinal direction is a half wavelength of an output radio wave of the antenna device.

Assignees

• Panasonic Ip Man Co Ltd

Inventors

• Hamabe Taichi

Classifications

• H01Q1/48

  Earthing means; Earth screens; Counterpoises · CPC title

• H01Q1/38

  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

• H01Q1/24

  with receiving set · CPC title

• H01Q1/2291

  used in Bluetooth® or Wi-Fi® devices of Wireless Local Area Networks [WLAN] (H01Q1/241 takes precedence; WLAN in general H04W) · CPC title

• H01Q15/006

  Selective devices having photonic band gap materials or materials of which the material properties are frequency dependent, e.g. perforated substrates, high-impedance surfaces · CPC title