ANTENNA DEVICE AND ELECTRONIC DEVICE USING THE SAME

• US 20180175493A1
• Filed: 12/15/2016
• Published: 06/21/2018
• Est. Priority Date: 12/15/2016
• Status: Abandoned Application

• Current Assignee: Nanning Fugui Precision Industrial Co., Ltd.
• Original Assignee: Hon Hai Precision Industry Co., Ltd., Nanning Fugui Precision Industrial Co., Ltd.
• Inventors: YANG, Chih-Chieh, CHANG, Yi-Hao
• Application Number:
  US15/379,728
• Publication Number:
  US 20180175493A1
• Time in Patent Office: Days
• CPC Class Codes: H01Q 1/243 with built-in antennas
• CPC Class Codes: H01Q 1/38 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 Class Codes: H01Q 1/48 Earthing means; Earth screens; Counterpoises
• CPC Class Codes: H01Q 5/378 Combination of fed elements with parasitic elements
• CPC Class Codes: H01Q 9/42 with folded element, the folded parts being spaced apart a small fraction of the operating wavelength

Abstract

A Planar Inverted-F antenna (PIFA) device includes a circuit board having a first surface, a second surface, and a through hole, an antenna being disposed in the first surface, and a metal member being disposed in the second surface. The through hole is connected between the first surface and the second surface. The antenna couples with the metal member to have a specific capacitive coupling effect through the through hole to enable transmission and reception of specific wireless frequencies by an electronic device having the PIFA.

Claims

1. An antenna device comprising:

a circuit board comprising a first surface, a second surface, and a through hole, the first surface being opposite to the second surface, wherein the through hole connected between the first surface and the second surface;

an antenna disposed on the first surface; and

a metal member disposed on the second surface;

wherein the antenna is capacitively coupled to the metal member through the through hole.

2. The antenna device of claim 1, wherein the first surface is parallel to the second surface, and the antenna is parallel to the metal member in the transverse direction.

3. The antenna device of claim 2, wherein a first terminal of the antenna is grounded, the first terminal of the antenna is electrically coupled to a signal source, a second terminal of the antenna is electrically coupled to a first terminal of the metal member through a capacitor, and a second terminal of the metal member is grounded.

4. The cleaning device of claim 3, wherein a length of the circuit board is about 90 mm.

5. The cleaning device of claim 4, wherein a height of the circuit board is about 0.4 mm.

6. The cleaning device of claim 5, wherein a width of the circuit board is about 50 mm.

7. The cleaning device of claim 6, wherein a dielectric constant of the circuit board is about 4.4.

8. An antenna device comprising:

a circuit board comprising a first surface, a second surface, and a through hole, the first surface being opposite to the second surface, wherein the through hole connected between the first surface and the second surface;

an antenna disposed on the first surface; and

a metal member disposed on the second surface;

wherein the first surface is parallel to the second surface, and the antenna is parallel to the metal member in the transverse direction;

wherein the antenna is capacitively coupled to the metal member through the through hole.

9. The antenna device of claim 8, wherein a first terminal of the antenna is grounded, the first terminal of the antenna is electrically coupled to a signal source, a second terminal of the antenna is electrically coupled to a first terminal of the metal member through a capacitor, and a second terminal of the metal member is grounded.

10. The cleaning device of claim 9, wherein a length of the circuit board is about 90 mm.

11. The cleaning device of claim 10, wherein a height of the circuit board is about 0.4 mm.

12. The cleaning device of claim 11, wherein a width of the circuit board is about 50 mm.

13. The cleaning device of claim 12, wherein a dielectric constant of the circuit board is about 4.4.

14. An electronic device comprising an antenna device and a housing, the antenna device disposed in the housing, the antenna device comprising:

a circuit board comprising a first surface, a second surface, and a through hole, the first surface being opposite to the second surface, wherein the through hole connected between the first surface and the second surface;

an antenna disposed on the first surface; and

a metal member disposed on the second surface;

wherein the first surface is parallel to the second surface, and the antenna is parallel to the metal member in the transverse direction;

wherein the antenna is capacitively coupled to the metal member through the through hole.

15. The electronic device of claim 14, wherein a first terminal of the antenna is grounded, the first terminal of the antenna is electrically coupled to a signal source, a second terminal of the antenna is electrically coupled to a first terminal of the metal member through a capacitor, and a second terminal of the metal member is grounded.

16. The electronic device of claim 15, wherein a length of the circuit board is about 90 mm.

17. The electronic device of claim 16, wherein a height of the circuit board is about 0.4 mm.

18. The electronic device of claim 17, wherein a width of the circuit board is about 50 mm.

19. The electronic device of claim 18, wherein a dielectric constant of the circuit board is about 4.4.