Antenna device and wireless apparatus

Patent metadata

Field	Value
Publication number	US-10249936-B2
Application number	US-201715468148-A
Country	US
Kind code	B2
Filing date	Mar 24, 2017
Priority date	Oct 2, 2014
Publication date	Apr 2, 2019
Grant date	Apr 2, 2019

Abstract

An antenna device includes a ground plane; a first resonator extending in a direction at a distance from the ground plane and connected to a feeding point; and a second resonator arranged at a distance from the first resonator. The ground plane includes an edge portion formed along the second resonator, with a resonance current being formed on the first resonator and the ground plane. The second resonator is configured to function as a radiation conductor by resonance of the first resonator. A tip portion of the first resonator is located near a metallic part. The second resonator has a plurality of electrical lengths of differing resonance frequencies.

First claim

What is claimed is:

1. An antenna device, comprising:
a ground plane;
a first resonator extending in a direction at a distance from the ground plane and connected to a feeding point; and
a second resonator positioned at a distance from the first resonator,
wherein the ground plane includes an edge portion formed along the second resonator, such that a resonance current is formed on the first resonator and the ground plane, the second resonator is configured to function as a radiation conductor by resonance of the first resonator, a tip portion of the first resonator is positioned near a metallic part, the second resonator has a plurality of electrical lengths with differing resonance frequencies and has a plurality of radiating elements including a first radiating element and a second radiating element, and the second radiating element includes a turnaround portion formed between the first radiating element and the ground plane and not formed between the first resonator and the ground plane when viewed from a direction perpendicular to the ground plane.

2. The antenna device according to claim 1 , wherein the first radiating element has a conductor portion that extends along a conductor portion of the second radiating element.

3. The antenna device according to claim 2 , wherein the first resonator has an inverted-F shape.

4. The antenna device according to claim 2 , wherein the first resonator is formed between the second resonator and the metallic part.

5. The antenna device according to claim 1 , wherein an entire length of the second radiating element is greater than an entire length of the first radiating element.

6. The antenna device according to claim 5 , wherein the first radiating element has a conductor portion that extends along a conductor portion of the second radiating element.

7. The antenna device according to claim 5 , wherein the first resonator has an inverted-F shape.

8. The antenna device according to claim 5 , wherein the first resonator is formed between the second resonator and the metallic part.

9. The antenna device according to claim 1 , wherein the second resonator has a radiating element that branches.

10. The antenna device according to claim 1 , wherein the first resonator has an inverted-F shape.

11. The antenna device according to claim 1 , wherein the first resonator is formed between the second resonator and the metallic part.

12. The antenna device according to claim 1 , wherein the metallic part is a display or a shield plate.

13. A wireless apparatus, comprising:
a metallic part; and
an antenna device comprising a ground plane, a first resonator extending in a direction at a distance from the ground plane and connected to a feeding point, and a second resonator positioned at a distance from the first resonator,
wherein the ground plane includes an edge portion formed along the second resonator such that a resonance current is formed on the first resonator and the ground plane, the second resonator is configured to function as a radiation conductor by resonance of the first resonator, a tip portion of the first resonator is positioned near the metallic part, the second resonator has a plurality of electrical lengths with differing resonance frequencies and has a plurality of radiating elements including a first radiating element and a second radiating element, and the second radiating element includes a turnaround portion formed between the first radiating element and the ground plane and not formed between the first resonator and the ground plane when viewed from a direction perpendicular to the ground plane.

14. The wireless apparatus according to claim 13 , wherein the first radiating element has a conductor portion that extends along a conductor portion of the second radiating element.

15. The wireless apparatus according to claim 13 , wherein an entire length of the second radiating element is greater than an entire length of the first radiating element.

16. The wireless apparatus according to claim 15 , wherein the first radiating element has a conductor portion that extends along a conductor portion of the second radiating element.

17. The wireless apparatus according to claim 13 , wherein the second resonator has a radiating element that branches.

18. The wireless apparatus according to claim 13 , wherein the first resonator has an inverted-F shape.

19. The wireless apparatus according to claim 13 , wherein the first resonator is formed between the second resonator and the metallic part.

20. The wireless apparatus according to claim 13 , wherein the metallic part is a display or a shield plate.

Assignees

• Agc Inc

Inventors

• Sayama Toshiki
• Sonoda Ryuta
• Ikawa Koji

Classifications

• H01Q1/48

  Earthing means; Earth screens; Counterpoises · CPC title

• H01Q5/392

  the parasitic elements having dual-band or multi-band characteristics · CPC title

• H01Q5/385 Primary

  Two or more parasitic elements · CPC title

• H01Q1/243

  with built-in antennas · CPC title

• H01Q5/378

  Combination of fed elements with parasitic elements · CPC title