Antenna apparatus

Patent metadata

Field	Value
Publication number	US-11881619-B2
Application number	US-201817299805-A
Country	US
Kind code	B2
Filing date	Dec 13, 2018
Priority date	Dec 13, 2018
Publication date	Jan 23, 2024
Grant date	Jan 23, 2024

Abstract

[Problem] To prevent radiation waves from being reflected inside a casing when a plurality of antennas compatible with different frequencies are mounted. [Solution] According to the present disclosure, provided is an antenna apparatus including a first antenna that operates at a first frequency, and a second antenna that is arranged on an outer side of a casing relative to the first antenna, that operates at a second frequency lower than the first frequency, and that includes an opening in a radiation direction of the first antenna.

First claim

The invention claimed is:

1. An antenna apparatus comprising:
a first antenna that operates at a first frequency; and
a second antenna that is arranged on an outer side of a casing relative to the first antenna, that operates at a second frequency lower than the first frequency, and that includes an opening in a radiation direction of the first antenna,
wherein a passive element is arranged, in the opening, at a position facing the second antenna,
the second antenna includes a plurality of patch antennas that are arrayed,
the plurality of passive elements are arranged so as to correspond to a plurality of patch antennas, and
the plurality of passive elements respectively face the plurality of patch antennas.

2. The antenna apparatus according to claim 1 , wherein the second antenna is arranged so as to surround an outer periphery of the casing.

3. The antenna apparatus according to claim 1 , wherein the opening is filled with a resin material.

4. The antenna apparatus according to claim 1 , wherein a distance between the plurality of patch antennas and the plurality of passive elements is equal to or smaller than 0.5 millimeters (mm).

5. The antenna apparatus according to claim 1 , wherein
the first frequency is a millimeter-wave frequency compatible with 5G, and
the second frequency is a frequency equal to or lower than 4 GHz.

6. The antenna apparatus according to claim 1 , wherein the antenna apparatus is mounted on a mobile terminal.

7. The antenna apparatus according to claim 1 , wherein the antenna apparatus is mounted on one of an Internet of Things (IoT) terminal and an on-vehicle terminal.

8. The antenna apparatus according to claim 1 , wherein the opening is rectangular in shape.

9. The antenna apparatus according to claim 1 , wherein a size of the second antenna, d 1 , is determined as d 1 =λ/2√/(ε r ), wherein
λ is a wavelength corresponding to the second frequency and ε r is a permittivity of the material of the second antenna.

10. The antenna apparatus according to claim 1 , wherein the passive element is metallic.

11. The antenna apparatus according to claim 1 , wherein the passive element is rectangular in shape.

12. The antenna apparatus according to claim 1 , wherein the casing is metallic.

13. The antenna apparatus according to claim 1 , wherein the plurality of patch antennas include at least four groups of patch antennas.

14. The antenna apparatus according to claim 13 , wherein the at least four groups of patch antennas are oriented towards different sides of the casing.

15. The antenna apparatus according to claim 13 , wherein each of the four groups of patch antennas includes four patch antennas.

16. The antenna apparatus according to claim 1 , wherein the plurality of passive elements are rectangular.

17. The antenna apparatus according to claim 1 , wherein the plurality of passive elements are smaller than the plurality of patch antennas.

18. The antenna apparatus according to claim 1 , wherein the passive element is insulated from the patch antenna by a resin material.

Assignees

• Sony Group Corp

Inventors

• Hiraoka Yoshiaki
• Suzuki Yuichiro
• Ito Takayoshi
• Omuro Tomihiro
• Ozone Toru
• Sato Jin

Classifications

• H01Q1/52 Primary

  Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure (absorbing means H01Q17/00) · CPC title

• H01Q1/243 Primary

  with built-in antennas · CPC title

• H01Q1/521

  reducing the coupling between adjacent antennas · CPC title

• H01Q5/307

  Individual or coupled radiating elements, each element being fed in an unspecified way · CPC title

• H01Q5/40

  Imbricated or interleaved structures; Combined or electromagnetically coupled arrangements, e.g. comprising two or more non-connected fed radiating elements · CPC title