Dipole antenna and electronic apparatus using the same

• US 20080174499A1
• Filed: 12/31/2007
• Published: 07/24/2008
• Est. Priority Date: 01/18/2007
• Status: Abandoned Application

• Current Assignee: Lite-On Technology Corporation
• Original Assignee: Lite-On Technology Corporation
• Inventors: Su, Saou-Wen, Tai, Horng-Ming, Tang, Ter-Ming
• Application Number:
  US12/003,693
• Publication Number:
  US 20080174499A1
• Time in Patent Office: Days
• US Class Current: 343/702
• CPC Class Codes: H01Q 1/242 specially adapted for hand-held use
• CPC Class Codes: H01Q 9/30 with feed to end of elongated active element, e.g. unipole H01Q9/44 takes precedence

Abstract

A dipole antenna includes a substrate, a radiating metal plate and a radiating metal line. The radiating metal plate is disposed on the substrate and has a first signal feeding point near a lateral side of the substrate. The radiating metal line has a second signal feeding point near the first signal feeding point.

Claims

1. A dipole antenna, comprising:

a substrate;

a radiating metal plate, which is disposed on the substrate and has a first signal feeding point near a lateral side of the substrate; and

a radiating metal line having a second signal feeding point, which is near the first signal feeding point.

2. The antenna according to claim 1, wherein the radiating metal plate is formed on the substrate by way of etching or printing.

3. The antenna according to claim 1, wherein the radiating metal plate and the radiating metal line are made of different materials.

4. The antenna according to claim 1, wherein the radiating metal plate substantially has a polygonal shape or an elliptic shape.

5. The antenna according to claim 4, wherein the radiating metal plate has a rectangular shape, a width of 45 mm and a length of 95 mm.

6. The antenna according to claim 1, wherein a gap between the first signal feeding point and the second signal feeding point is substantially smaller than 3 mm.

7. The antenna according to claim 1, wherein the radiating metal line has a single core or multiple cores.

8. The antenna according to claim 1, wherein a length of the radiating metal line is about 135 mm.

9. An electronic apparatus, comprising:

a casing;

a dipole antenna, which comprises;

a substrate disposed in the casing;

a radiating metal plate, which is disposed in the substrate and has a first signal feeding point near a lateral side of the substrate; and

a radiating metal line having a second signal feeding point near the first signal feeding point; and

a control circuit, which is disposed in the casing and coupled to the dipole antenna.

10. The apparatus according to claim 9, wherein the control circuit is disposed on the substrate.

11. The apparatus according to claim 9 being a digital television receiving apparatus, wherein the control circuit comprises a digital television tuner electrically connected to the first signal feeding point and the second signal feeding point.

12. The apparatus according to claim 9, wherein the radiating metal plate is a ground plane of the electronic apparatus.

13. The apparatus according to claim 9, wherein the radiating metal plate and the radiating metal line are made of different materials.

14. The apparatus according to claim 9, wherein the radiating metal plate substantially has a polygonal shape or an elliptic shape.

15. The apparatus according to claim 9, wherein a gap between the first signal feeding point and the second signal feeding point is substantially smaller than 3 mm.

16. The apparatus according to claim 9, wherein the radiating metal line has a single core or multiple cores.

17. The apparatus according to claim 9, further comprising:

a transmission interface disposed in the casing; and

a transmission cable coupled to the casing.

20. The apparatus according to claim 20, wherein the transmission interface is a universal serial bus interface.

18. The apparatus according to claim 20, wherein the radiating metal line is disposed in the transmission cable.

19. The apparatus according to claim 20, wherein the transmission interface is disposed on the substrate.