Transmission and reception of high-speed wireless communication using a stacked array antenna

• US 8,855,730 B2
• Filed: 01/31/2014
• Issued: 10/07/2014
• Est. Priority Date: 02/08/2013
• Status: Active Grant

• Current Assignee: Ubiquiti Inc.
• Original Assignee: Ubiquiti Networks, Inc. (Ubiquiti Inc.)
• Inventors: Sanford, John R.
• Primary Examiner(s): Yun, Eugene
• Application Number:
  US14/170,258
• Publication Number:
  US 20140227985A1
• Time in Patent Office: 249 Days
• Field of Search: 455/25, 455/63.4, 455/81, 455/82, 455/83, 455/90.3, 455/562.1, 455/575.7, 455/106, 455/107, 455/269, 455/575.1, 455/224, 455/271, 455/523
• US Class Current: 455/575.7
• CPC Class Codes: F16M 11/14 with ball-joint ball-jointed hinges F16C11/06 ; adjustable mountings employing universal joints for lighting devices F21V21/26 - F21V21/30
• CPC Class Codes: H01Q 1/125 Means for positioning
• 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 1/42 Housings not intimately mechanically associated with radiating elements, e.g. radome
• CPC Class Codes: H01Q 1/428 Collapsible radomes; rotatable, tiltable radomes
• CPC Class Codes: H01Q 21/0087 Apparatus or processes specially adapted for manufacturing antenna arrays manufacturing waveguides H01P11/00
• CPC Class Codes: H01Q 21/065 Patch antenna array
• CPC Class Codes: H01Q 3/08 for varying two co-ordinates of the orientation
• CPC Class Codes: H01Q 5/50 Feeding or matching arrangements for broad-band or multi-band operation
• CPC Class Codes: H01Q 9/0428 radiating a circular polarised wave
• CPC Class Codes: H01Q 9/045 with particular feeding means for circular polarisation H01Q9/0428
• CPC Class Codes: Y10T 29/49018 with other electrical component

Abstract

Methods of transmitting and receiving wireless signals using a compact antenna having an array of compactly arranged emitters/receivers. Wireless signals are transmitted from an antenna feed to the plurality of emitters/receivers in any appropriate band, such as the 5.15 to 5.85 GHz band and/or the 2.40-2.48 GHz band. The feed is connected to a radio connection point and from there may connect to the plurality of emitters/receivers arranged in a plane (or planes) above an antenna feed connecting the emitting elements to the radio connection point. The antenna feed is positioned between the emitters and a ground plane. Signals (e.g., horizontally and vertically polarized signals) may be emitted from the plurality of antenna radiating surfaces. Methods of manufacturing compact array antennas are also described.

Claims

1. A method of transmitting and receiving wireless broadband data, the method comprising:

transmitting broadband data from a feed connection to an antenna feed, wherein the feed connection is connected to a radio connection point;

transmitting the broadband data from the antenna feed along a plurality of feed lines to a plurality of antenna radiating elements, wherein the antenna radiating elements are positioned in or above a second plane that is above a ground plate that extends in a first plane, further wherein the antenna feed extends in a third plane between the first plane and the antenna radiating elements, and wherein the plurality of feed lines extend from the third plane and connect to the antenna radiating elements; and

emitting the broadband data from a plurality of antenna radiating surfaces, wherein each of the plurality of antenna radiating elements includes one of the plurality of antenna radiating surfaces.

2. The method of claim 1, wherein transmitting broadband data comprises transmitting vertically polarized broadband data.

3. The method of claim 2, further comprising transmitting horizontally polarized broadband data from a horizontal polarization feed connection that is connected to a second radio connection point to the antenna feed.

4. The method of claim 3, further comprising transmitting the horizontally polarized broadband data from the antenna feed to a plurality of horizontal polarization feed lines, wherein the horizontal polarization feed lines extend from the third plane and connect to the antenna radiating elements.

5. The method of claim 1, further comprising receiving broadband data on the antenna radiating surfaces and transmitting the broadband data to the antenna feed and from the antenna feed to the radio connection point via the feed connection.

6. The method of claim 1, wherein the antenna feed comprises a plurality of antenna feed regions in the third plane.

7. The method of claim 1, wherein the plurality of feed lines comprises a plurality of slant feed lines, wherein each slant feed line connects one side of an antenna radiating element to the antenna feed.

8. The method of claim 1, wherein the radiating surfaces extend in the second plane.

9. The method of claim 1, wherein the first plane and the second plane are separated by between about 2 and about 20 mm.

10. The method of claim 1, wherein the first plane is separated from the third plane by between about 1 and about 10 mm, and wherein the second plane is separate from the third plane by between about 1 and about 10 mm.

11. The method of claim 1, wherein a surface area of the radiating surface of at least some of the antenna radiating elements vary relative to each other by within about 20.0% of an average surface area of the radiating surfaces in the plurality of antenna radiating elements.

12. The method of claim 1, wherein at least some of the antenna radiating elements have different shapes and surface areas.

13. The method of claim 1, wherein a surface area of the radiating surface of at least some of the antenna radiating elements vary relative to each other by between about 0.1% and 20.0% of an average surface area of the radiating surfaces in the plurality of antenna radiating elements.

14. The method of claim 1, further wherein the radiating surfaces of the plurality of antenna radiating elements have different surface areas that vary from each other by between about 0.1% and 10.0% of an average surface area of the radiating surfaces in the plurality of antenna radiating elements.

15. The method of claim 1, wherein the antenna feed comprises a plurality of antenna feed regions that each have a length and a width extending in the third plane, and wherein for at least some of the antenna feeds, the width varies along the length.

16. The method of claim 1, wherein the antenna feed comprises a plurality of antenna feed regions that each have a length and a width extending in the third plane, and wherein for at least half of the antenna feeds, the width varies along the length.

17. The method of claim 1, wherein the plurality of feed line are selected from the group consisting of:

a plurality of slant feed lines wherein each slant feed line connects to the edge of one antenna radiating element from the plurality of antenna radiating elements to the antenna feed, and a plurality of cylindrical feed lines wherein each cylindrical feed line connects one antenna radiating element from the plurality of antenna radiating elements to the antenna feed at a position that is off-center relative to the radiating surface of the antenna radiating element.

18. The method of claim 1, wherein the antenna feed is formed of a single sheet of metal.

19. The method of claim 1, wherein the plurality of antenna radiating elements, antenna feed, and plurality of feed lines are all formed of a single sheet of metal.

20. The method of claim 1, wherein the plurality of antenna radiating elements, antenna feed, and plurality of feed lines are all formed of a single sheet of tin plated steel, brass, or copper.

21. The method of claim 1, wherein the plurality of antenna radiating elements consists of four antenna radiating elements.

22. The method of claim 1, wherein the plurality of antenna radiating elements consists of nine antenna radiating elements.

23. The method of claim 1, wherein the gain of the transmitted broadband data is between about 15 and about 20 dB.

24. The method of claim 1, wherein the bandwidth of the transmitted and received broadband data is between about 5.15 to 5.85 GHz.

25. The method of claim 1, wherein the bandwidth of the transmitted and received broadband data is between about 2.40 to 2.48 GHz.

26. A method of transmitting and receiving wireless broadband data, the method comprising:

transmitting vertically polarized broadband data from a vertical polarization feed connection to an antenna feed, wherein the vertical polarization feed connection is connected to a first radio connection point;

transmitting horizontally polarized broadband data from a horizontal polarization feed connection to the antenna feed, wherein the horizontal polarization feed connection is connected to a second radio connection point;

transmitting the vertically polarized broadband data from the antenna feed along a plurality of vertical polarization feed lines to a plurality of antenna radiating elements;

transmitting the horizontally polarized broadband data from the antenna feed along a plurality of horizontal polarization feed lines to a plurality of antenna radiating elements;

wherein the antenna radiating elements are positioned in or above a second plane that is above a ground plate that extends in a first plane, further wherein the antenna feed extends in a third plane between the first plane and the antenna radiating elements, and wherein the plurality of feed lines extend from the third plane and connect to the antenna radiating elements; and

emitting the horizontally and vertically polarized broadband data from a plurality of antenna radiating surfaces, wherein each of the plurality of antenna radiating elements includes one of the plurality of antenna radiating surfaces.

27. The method of claim 26, further comprising receiving broadband data on the antenna radiating surfaces and transmitting the broadband data to the antenna feed.

28. The method of claim 26, further comprising receiving broadband data on the antenna radiating surfaces and transmitting the broadband data to the antenna feed and from the antenna feed to the first radio connection point via the vertical polarization feed connection.

29. The method of claim 26, further comprising receiving broadband data on the antenna radiating surfaces and transmitting the broadband data to the antenna feed and from the antenna feed to the second radio connection point via the horizontal polarization feed connection.