Fractal antenna based on Peano-Gosper curve

• US 7,541,981 B2
• Filed: 12/28/2006
• Issued: 06/02/2009
• Est. Priority Date: 10/04/2006
• Status: Active Grant

• Current Assignee: Avago Technologies International Sales Pte Limited (Broadcom, Inc.)
• Original Assignee: Broadcom Corporation (Broadcom, Inc.)
• Inventors: Piskun, Vadim
• Primary Examiner(s): PHAN, THO GIA
• Application Number:
  US11/648,448
• Publication Number:
  US 20080084352A1
• Time in Patent Office: 887 Days
• Field of Search: 343/700.MS, 343/702
• US Class Current: 343/700.0MS
• CPC Class Codes: H01Q 1/2291 used in bluetooth or WI-FI devices of Wireless Local Area Networks [WLAN] H01Q1/241 takes precedence; WLAN in general H04W
• CPC Class Codes: H01Q 1/36 Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewithH01Q1/08, H01Q1/14 take precedence

Abstract

A fractal antenna array based on a modified Peano-Gosper curve. The fractal antenna array is constructed using a 100-segment fractal curve that has the fractal expansion in a linear direction.

Claims

1. An apparatus comprising:

a non-conductive material; and

a conductive material constructed to form an antenna in which the antenna has a shape determined by selecting a predetermined number of segments that form a fractional portion of a recursion stage of a fractal pattern, in which the predetermined number of segments are selected approximately from adjacent border arrays of the recursion stage of the fractal pattern, so that the recursion stage of the fractal pattern is modified to provide a modified fractal pattern that has fractal expansion prominently in one linear direction.

2. The apparatus of claim 1, wherein the modified fractal pattern is obtained from a portion of a recursion stage of a Peano-Gosper curve.

3. The apparatus of claim 2, wherein the modified fractal pattern has approximately 100 segments of the recursion stage of the Peano-Gosper curve that has approximately 343 segments.

4. The apparatus of claim 3, wherein the antenna has dimensions of approximately 349 mils in the one linear direction and approximately 208 mils in a corresponding perpendicular direction.

5. The apparatus of claim 2, wherein the modified fractal pattern has edges that are rounded.

6. The apparatus of claim 2 wherein the non-conductive material is a printed circuit board.

7. An apparatus comprising:

an integrated circuit that includes a radio frequency (RF) stage; and

an antenna coupled to the RF stage in which the antenna has a shape determined by selecting a predetermined number of segments that form a fractional portion of a recursion stage of a fractal pattern, in which the predetermined number of segments are selected approximately from adjacent border arrays of the recursion stage of the fractal pattern, so that the recursion stage of the fractal pattern is modified to provide a modified fractal pattern that has fractal expansion prominently in one linear direction.

8. The apparatus of claim 7, wherein the modified fractal pattern is obtained from a portion of a recursion stage of a Peano-Gosper curve.

9. The apparatus of claim 8, wherein the modified fractal pattern has approximately 100 segments of the recursion stage of the Peano-Gosper curve that has approximately 343 segments.

10. The apparatus of claim 9, wherein the antenna has dimensions of approximately 349 mils in the one linear direction and approximately 208 mils in a corresponding perpendicular direction.

11. The apparatus of claim 9, wherein the modified fractal pattern has edges that are rounded.

12. The apparatus of claim 9 wherein antenna is constructed external to the integrated circuit.

13. The apparatus of claim 9 wherein antenna is constructed within the integrated circuit.

14. A method comprising:

forming a conductive material on a non-conductive surface to construct an antenna in which the antenna has a shape determined by selecting a predetermined number of segments that form a fractional portion of a recursion stage of a fractal pattern, in which the predetermined number of segments are selected approximately from adjacent border arrays of the recursion stage of the fractal pattern, so that the recursion stage of the fractal pattern is modified to provide a modified fractal pattern that has fractal expansion prominently in one linear direction; and

coupling the antenna to a radio frequency circuit.

15. The method of claim 14, wherein the modified fractal pattern that is used to form the antenna is obtained from a portion of a recursion stage of a Peano-Gosper curve.

16. The method of claim 15, wherein the modified fractal pattern that is used to form the antenna has approximately 100 segments of the recursion stage of the Peano-Gosper curve that has approximately 343 segments.

17. The method of claim 16, wherein the antenna when formed has dimensions of approximately 349 mils in the one linear direction and approximately 208 mils in a corresponding perpendicular direction.

18. The method of claim 15, wherein when forming the antenna, the modified fractal pattern has curve edges of the antenna that are rounded.

19. The method of claim 15 wherein when forming the antenna, the antenna is formed on a printed circuit board.

20. The method of claim 15 wherein when forming the antenna, the antenna is formed within an integrated circuit.