Method, system and apparatus for an antenna

• US 20070035462A1
• Filed: 06/30/2006
• Published: 02/15/2007
• Est. Priority Date: 06/30/2005
• Status: Active Grant

• Current Assignee: Alereon Incorporated (PNG Telecommunications, Inc.)
• Original Assignee: Alereon Incorporated (PNG Telecommunications, Inc.)
• Inventors: Hertel, Thorsten
• Granted Patent: US 7,271,779 B2
• Time in Patent Office: Days
• US Class Current: 343/795
• CPC Class Codes: H01Q 9/065 Microstrip dipole antennas patch antenna H01Q9/0407
• CPC Class Codes: H01Q 9/285 Planar dipole H01Q9/065 takes precedence; patch antenna H01Q9/0407

Abstract

Embodiments of the present invention provide a microstrip-coupled dipole antenna. A microstrip of the antenna may be formed on top of a printed circuit board (PCB) and coupled to a transmission line such that the microstrip is operable to transfer electromagnetic energy fed to it by the transmission line to a dipole structure on the bottom of the PCB that, in turn, radiates a broadband electromagnetic signal.

Claims

1. An antenna, comprising

a dipole structure comprising a first antenna conductor and a second antenna conductor;

and

a feed structure coupled to a feed point, wherein the feed structure is operable to couple a signal delivered to the feed point to the first antenna conductor and the second antenna conductor.

2. The antenna of claim 1, wherein the feed structure is a microstrip coupled line.

3. The antenna of claim 2, wherein at least a portion of the microstrip line is above the feed point.

4. The antenna of claim 3, wherein the microstrip coupled line comprises a first portion along a first axis, a second portion on a second axis substantially perpendicular to the first axis.

5. The antenna of claim 4, wherein the first portion and the second portion are connected by a curved portion.

6. The antenna of claim 4, wherein the microstrip coupled line comprises a third portion along the first axis

7. The antenna of claim 3, comprising a dipole gap.

8. The antenna of claim 7, wherein the microstrip coupled line is above at least a portion of the dipole gap.

9. The antenna of claim 7, wherein the feed structure and the first antenna conductor and the second antenna conductor are formed on a printed circuit board (PCB).

10. The antenna of claim 7, wherein the feed structure and the microstrip coupled line are formed on a first side of the PCB and the first antenna conductor and the second antenna conductor are formed on a second side of the PCB.

11. The antenna of claim 10, wherein the microstrip coupled line is over at least a portion of the first antenna conductor and at least a portion of the second antenna conductor.

12. The antenna of claim 11, comprising a notch filter

13. The antenna of claim 12, wherein the notch filter is operable in the frequencies between approximately 5.15 GHz and approximately 5.35 GHz.

14. The antenna of claim 12, comprising a notched matching stub.

15. The antenna of claim 14, wherein the notched matching stub is operable to filter frequencies less than approximately 3 GHz.

16. The antenna of claim 14, comprising a matching stub.

17. The antenna of claim 12, comprising a first set of teeth and a second set of teeth.

18. The antenna of claim 17, wherein the first set of teeth and the second set of teeth are formed on the second side of the PCB.

19. The antenna of claim 18, wherein the first set of teeth and the second set of teeth are in a comb pattern.

20. The antenna of claim 18, wherein the first antenna conductor has a first cutout and the second antenna conductor has a second cutout.

21. The antenna of claim 18, wherein the first set of teeth and the second set of teeth are in a meanderline pattern.

22. The antenna of claim 21, wherein the first antenna conductor has a first cutout and the second antenna conductor has a second cutout.

23. The antenna of claim 17, wherein the notch filter is over at least one of the first set of teeth.

24. An antenna structure, comprising

a printed circuit board (PCB);

a dipole structure formed on the PCB comprising a first antenna conductor and a second antenna conductor, wherein a dipole gap exists between the first antenna conductor and the second antenna conductor; and

a microstrip coupled line formed in the PCB over at least a portion of the dipole gap and coupled to a feed point, wherein the microstrip coupled line is operable to couple a signal delivered to the feed point to the first antenna conductor and the second antenna conductor.