Sectored antenna systems for WLAN

• US 7,460,082 B2
• Filed: 12/30/2003
• Issued: 12/02/2008
• Est. Priority Date: 12/30/2003
• Status: Expired due to Term

• Current Assignee: Intel Corporation
• Original Assignee: Intel Corporation
• Inventors: Lin, Xintian E., Li, Qinghua
• Primary Examiner(s): TRAN, THUY V
• Application Number:
  US10/749,665
• Publication Number:
  US 20050146470A1
• Time in Patent Office: 1,799 Days
• Field of Search: 343/702, 343/757, 343/767, 343/770, 343/893, 343/844, 370/310, 370/312, 370/277, 342/360, 455/426.2, 455/456.1, 455/561
• US Class Current: 343/893
• CPC Class Codes: G06F 1/1616 with folding flat displays, e.g. laptop computers or notebooks having a clamshell configuration, with body parts pivoting to an open position around an axis parallel to the plane they define in closed position
• CPC Class Codes: G06F 1/1698 the I/O peripheral being a sending/receiving arrangement to establish a cordless communication link, e.g. radio or infrared link, integrated cellular phone details of antennas disposed inside a computer H01Q1/2266
• CPC Class Codes: H01Q 1/2258 used with computer equipment
• CPC Class Codes: H01Q 1/2266 disposed inside the computer
• CPC Class Codes: H01Q 21/28 Combinations of substantially independent non-interacting antenna units or systems multiple beam H01Q25/00
• CPC Class Codes: H04B 7/0491 using two or more sectors, i.e. sector diversity
• CPC Class Codes: H04B 7/0671 using different delays between antennas
• CPC Class Codes: H04W 16/28 using beam steering
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]

Abstract

An access point may use two omni-directional antennas or one omni-directional antenna and multiple sectored antennas in a communications network. The mobile stations may use sectored antennas. The omni-directional antennas may include two or more sectored antennas.

Claims

1. A communications network, comprising:

a mobile device having at least two omni-directional antennas, where a first omni-directional antenna is formed by a combination of multiple sectored antennas and the at least two omni-directional antennas use different tones.

2. The communications network of claim 1, where the combination of multiple sectored antennas includes a first sectored antenna having a sector to cover a radiation pattern of substantially 0 to 90 degrees and another sector to cover a radiation pattern of substantially 180 to 270 degrees.

3. The communications network of claim 2, where the combination of multiple sectored antennas includes a second sectored antenna having a sector to cover a radiation pattern of substantially 90 to 180 degrees and another sector to cover a radiation pattern of substantially 270 to 360 degrees.

4. The communications network of claim 1, where the combination of multiple sectored antennas includes first and second sectored antennas, the first sectored antenna having a radiation pattern of substantially 0 to 180 degrees and the second sectored antenna having a radiation pattern of substantially 180 to 310 degrees.

5. The communications network of claim 1, wherein the combination of multiple sectored antennas includes three sectored antennas having radiation patterns that combine to form the first omni-directional antenna.

6. The communications network of claim 5, wherein the three sectored antennas include a first sectored antenna having a radiation pattern of substantially 0 to 90 degrees, a second sectored antenna having radiation patterns to cover substantially 90 to 180 degrees and 270 to 310 degrees, and a third sectored antenna having a radiation pattern of substantially 180 to 270 degrees.

7. The communications network of claim 1, wherein the combination of multiple sectored antennas includes four sectored antennas having radiation patterns that combine to form the first omni-directional antenna.

8. The communications network of claim 7, wherein the four sectored antennas each cover a radiation pattern of about 0 degrees to 90 degrees and are appropriately positioned to form the first omni-directional antenna.

9. A receiver system of an access point, comprising:

two omni-directional antennas coupled to a receiver of the access point, where at least one of the two omni-directional antennas is a combination of two complimentary placed sectored antennas.

10. The receiver system of claim 9, wherein the two omni-directional antennas allow Cyclic Delay Diversity (CDD) techniques to be employed.

11. The receiver system of claim 9, wherein a first omni-directional antenna is placed in one corner of a display for a laptop computer and a second omni-directional antenna is placed in another corner of the display.

12. The receiver system of claim 9, wherein a first omni-directional antenna is placed along one side of a display for a laptop computer and a second omni-directional antenna is placed along another side of the display.