Antenna with filter

• US 20060012526A1
• Filed: 11/12/2004
• Published: 01/19/2006
• Est. Priority Date: 07/13/2004
• Status: Active Grant

• Current Assignee: Accton Technology Corporation
• Original Assignee: Accton Technology Corporation
• Inventors: Tsai, Ting-Yi, Liang, Jia-Haur
• Granted Patent: US 7,180,449 B2
• Time in Patent Office: Days
• US Class Current: 343/700.MS
• CPC Class Codes: H01P 1/2039 Galvanic coupling between Input/Output
• CPC Class Codes: H01Q 21/10 Collinear arrangements of substantially straight elongated conductive units
• CPC Class Codes: H01Q 21/30 Combinations of separate antenna units operating in different wavebands and connected to a common feeder system
• CPC Class Codes: H01Q 5/371 Branching current paths
• CPC Class Codes: H01Q 5/40 Imbricated or interleaved structures; Combined or electromagnetically coupled arrangements, e.g. comprising two or more non-connected fed radiating elements
• CPC Class Codes: H01Q 9/40 Element having extended radiating surface
• CPC Class Codes: H01Q 9/42 with folded element, the folded parts being spaced apart a small fraction of the operating wavelength

Abstract

The present invention discloses an antenna with a filter, which comprises a substrate; an antenna device, a filter and a feed end. The antenna device is printed on the substrate; the filter is coupled to the antenna device; the feed end is coupled to the filter. The filter and the antenna device are radiating members printed on the substrate.

Claims

1. An antenna, comprising:

a substrate;

an antenna device, being disposed on the substrate; and

a filter, disposed on the substrate and being coupled to an end of said antenna device.

2. The antenna of claim 1, wherein said antenna further comprises a feed end, and said filter is disposed between said feed end and said antenna device.

3. The antenna of claim 1, wherein said filter is a low-pass filter.

4. The antenna of claim 1, wherein said filter is a band-pass filter.

5. The antenna of claim 1, wherein said antenna device and said filter are substantially a metal conductive wire printed on said substrate.

6. The antenna of claim 1, wherein said antenna device is one selected from the group consisting of a dipole antenna, a monopole antenna, a patch antenna, an planar inverted F antenna (PIFA), and a circular polarized antenna (CP antenna).

7. The antenna of claim 1, wherein said antenna device can be an antenna array.

8. The antenna of claim 1, wherein said substrate is a printed circuit board made of fiberglass reinforced epoxy resin (FR4).

9. The antenna of claim 1, wherein said substrate is a flexible film substrate made of polyimide.

10. An antenna, comprising:

a first substrate, having a first top and a first bottom;

a second substrate, having a second top arranged corresponding to said first bottom and a second bottom;

a first antenna device, being disposed on said first top;

a first filter device, coupled to said first antenna device;

a second antenna device, being disposed on said second bottom; and

a second filter, coupled to said second antenna device;

wherein, the first antenna device and the second antenna device are substantially radiating members printed on said corresponding substrates.

11. The antenna of claim 10, wherein a first grounding surface is arranged on said first bottom, and a second grounding surface is arranged on said second top.

12. The antenna of claim 10, wherein said first filter and said second are low-pass filters.

13. The antenna of claim 10, wherein said first filter and said second are band-pass filters.

14. The antenna of claim 10, wherein said first antenna device and said second antenna device are respectively one selected from the group consisting of a dipole antenna, a monopole antenna, a patch antenna, an planar inverted F antenna (PIFA), and a circular polarized antenna (CP antenna).

15. The antenna of claim 10, wherein said first and said second antenna devices can be antenna arrays.

16. The antenna of claim 10, wherein said first substrate and second substrate are respectively a printed circuit board made of fiberglass reinforced epoxy resin (FR4).

17. The antenna of claim 10, wherein said substrate is a flexible film substrate made of polyimide.

18. The antenna of claim 10, wherein said first substrate and second substrate are respectively a printed circuit board made of bismaleimide-triazine (BT).

19. The antenna of claim 10, wherein said antenna device and filter are metal conductive wires printed on said corresponding substrate.