Coverage antenna apparatus with selectable horizontal and vertical polarization elements

• US 8,068,068 B2
• Filed: 04/07/2008
• Issued: 11/29/2011
• Est. Priority Date: 06/24/2005
• Status: Active Grant

• Current Assignee: Ruckus IP Holdings LLC
• Original Assignee: Ruckus Wireless, Inc. (CommScope Holding Company, Inc.)
• Inventors: Shtrom, Victor, Kish, William
• Primary Examiner(s): Nguyen; Hoang V
• Application Number:
  US12/082,090
• Publication Number:
  US 20080291098A1
• Time in Patent Office: 1,331 Days
• Field of Search: 343/700.MS, 343/793, 343/795, 343/846, 343/876, 343/893
• US Class Current: 343/876
• CPC Class Codes: H01Q 13/10 Resonant slot antennas
• CPC Class Codes: H01Q 21/205 providing an omnidirectional coverage turnstile aerials H01Q21/26
• CPC Class Codes: H01Q 21/245 provided with means for varying the polarisation polarising devices H01Q15/24; tracking by comparing linear polarisation compounds G01S3/146; reducing depolarisation effects H04B7/00; polarisation diversity H04B7/10
• CPC Class Codes: H01Q 3/242 Circumferential scanning
• CPC Class Codes: H01Q 9/16 with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole H01Q9/44 takes precedence

Abstract

An antenna apparatus comprises selectable antenna elements including a plurality of dipoles and/or a plurality of slot antennas (“slot”). Each dipole and/or each slot provides gain with respect to isotropic. The dipoles may generate vertically polarized radiation and the slots may generate horizontally polarized radiation. Each antenna element may have one or more loading structures configured to decrease the footprint (i.e., the physical dimension) of the antenna element and minimize the size of the antenna apparatus.

Claims

1. A system for wireless communication, comprising:

a communication device configured to generate or receive a radio frequency (RF) signal;

a plurality of antenna elements including one or more selectable horizontally polarized antennas and one or more selectable vertically polarized antennas, each of the plurality of antenna elements configured to transmit or receive an RF signal with a remote node through a wireless link; and

an antenna element selecting device configured to selectively couple a first combination of one or more of the plurality of antenna elements to the communication device, the antenna element selecting device further configured to selectively couple a second combination of one or more of the plurality of antenna elements to the communication device when the wireless link experiences interference.

2. The system of claim 1, wherein the plurality of antenna elements includes at least six antenna elements.

3. The system of claim 1, wherein the first combination of one or more of the plurality of antenna elements radiates an RF signal in a first direction and the second combination of one or more of the plurality of antenna elements radiates an RF signal in a second direction.

4. The system of claim 1, wherein the first combination of one or more of the plurality of antenna elements radiates an RF signal corresponding to a first gain and the second combination of one or more of the plurality of antenna elements radiates an RF signal corresponding to a second gain.

5. The system of claim 1, further comprising a housing, wherein the communication device, the plurality of antenna elements, and the antenna element selecting device are contained within the housing.

6. The system of claim 1 further comprising a plurality of light emitting diodes (LEDs), wherein different combinations of the plurality of LEDs are selected based on a selected combination of the plurality of antenna elements.

7. The system of claim 1 further comprising a light emitting diode (LED) associated with each antenna element, wherein the state of each LED indicates whether the associated antenna is selectively coupled to the communication device.

8. An apparatus for wireless communication, comprising:

a first printed circuit board including a plurality of elements for transmitting or receiving a radio frequency (RF) signal, the plurality of elements including a first element configured to transmit or receive an RF signal in a first polarization and a second element configured to transmit or receive an RF signal in a second polarization, the directional configuration of the first polarization differing from the directional configuration of the second polarization, the RF signal communicated to a remote node through a wireless link;

processing circuitry configured to process the RF signal; and

an element selection device configured to couple one or more of the plurality of selected elements to the processing circuitry, the element selection device further configured to select different sets of elements within the plurality of elements based on interference in the wireless link.

9. The apparatus of claim 8, wherein the plurality of elements includes one or more selectable antenna elements.

10. The apparatus of claim 9, wherein the selectable antenna elements may be selected to form different combinations, each combination associated with a radiation pattern.

11. The apparatus of claim 10, wherein at least two of the combinations are associated with radiation patterns having a different direction.

12. The apparatus of claim 10, wherein at least two of the combinations of elements are associated with radiation patterns having a different gain.

13. The apparatus of claim 10, further comprising a plurality of light emitting diodes (LEDs), wherein different combinations of the LEDs are illuminated based on different combinations of the selectable antenna elements.

14. The apparatus of claim 8, wherein the plurality of elements, the processing circuitry, and the element selection device are contained within a housing.

15. An apparatus for wireless communication, comprising:

a first printed circuit board including a plurality of elements for transmitting or receiving a radio frequency (RF) signal, the plurality of elements including a first element configured to transmit or receive an RF signal in a first polarization and a second element configured to transmit or receive an RF signal in a second polarization, the directional configuration of the first polarization differing from the directional configuration of the second polarization, the RF signal communicated to a remote node through a wireless link, wherein the plurality of elements are incorporated on the printed circuit board;

processing circuitry configured to process the RF signal; and

an element selection device configured to couple one or more of the plurality of selected elements to the processing circuitry, the element selection device further configured to select different sets of elements within the plurality of elements based on interference in the wireless link.

16. An apparatus for wireless communication, comprising:

a first printed circuit board including a plurality of elements for transmitting or receiving a radio frequency (RF) signal, the plurality of elements including a first element configured to transmit or receive an RF signal in a first polarization and a second element configured to transmit or receive an RF signal in a second polarization, the directional configuration of the first polarization differing from the directional configuration of the second polarization, the RF signal communicated to a remote node through a wireless link;

processing circuitry configured to process the RF signal; and

an element selection device configured to couple one or more of the plurality of selected elements to the processing circuitry, the element selection device further configured to select different sets of elements within the plurality of elements based on interference in the wireless link, wherein all of the plurality of elements are selectable.

17. A system for wireless communication, comprising:

a plurality of antenna elements including one or more selectable horizontally polarized antennas and one or more selectable vertically polarized antennas, each of the plurality of antennas configured to transmit or receive a radio frequency (RF) signal with a remote node through a wireless link;

interference detection circuitry for detecting interference in the wireless link; and

an antenna element selecting device configured to select a first combination of one or more of the plurality of antenna elements to transmit or receive an RF signal, the antenna element selecting device further configured to select a second combination of one or more of the plurality of antenna elements to transmit or receive an RF signal when the interference detection circuitry detects wireless link interference.

18. A system for wireless communication, comprising:

a plurality of antenna elements including one or more selectable horizontally polarized antennas and one or more selectable vertically polarized antennas, each of the plurality of antennas configured to transmit or receive a radio frequency (RF) signal with a remote node through a wireless link;

interference detection circuitry for detecting interference in the wireless link; and

an antenna element selecting device configured to select a first combination of one or more of the plurality of antenna elements to transmit or receive an RF signal, the antenna element selecting device further configured to select a second combination of one or more of the plurality of antenna elements to transmit or receive an RF signal when the interference detection circuitry detects wireless link interference, wherein the plurality of antenna elements, the antenna element selecting device and the interference detection circuitry are incorporated on a printed circuit board, the printed circuit board coupled to a housing.