Multi-beam antenna wireless network system

• US 7,283,844 B2
• Filed: 04/04/2001
• Issued: 10/16/2007
• Est. Priority Date: 04/04/2000
• Status: Expired due to Fees

• Current Assignee: Anntron, Inc.
• Original Assignee: Anntron, Inc.
• Inventors: Thompson, Scott D.
• Primary Examiner(s): Eng; George
• Assistant Examiner(s): Miller; Brandon J.
• Application Number:
  US09/825,636
• Publication Number:
  US 20010036843A1
• Time in Patent Office: 2,386 Days
• Field of Search: 455/562.1, 455/561, 455/422.1, 455/13.3, 455/129, 455/522, 455/428, 455/83, 455/424, 455/448, 370/335, 370/342, 370/328, 370/349, 370/356, 370/313, 370/203, 370/407, 370/447, 342/377, 342/373, 342/368
• US Class Current: 455/562.1
• CPC Class Codes: H01Q 1/246 specially adapted for base stations
• CPC Class Codes: H01Q 21/065 Patch antenna array
• CPC Class Codes: H01Q 25/00 Antennas or antenna systems providing at least two radiating patterns arrangements for changing or varying the orientation or the shape of the directional pattern H01Q3/00

Abstract

A wireless network system that utilizes a multi-beam antenna to communicate with multiple remote stations. The system includes a hub and one or more remote stations. The hub is connected to a source which requires communication with the remote stations, in order to exchange information, such as data and/or voice transmissions. The hub includes a multi-beam antenna assembly, one or more hub radio transceivers, an Ethernet switch, and a controller. Each remote station includes a single directive antenna, a single remote station radio transceiver, an Ethernet switch, and a controller. The multi-beam antenna assembly includes a beam former and a multi-beam antenna. The multi-beam antenna at the hub provides the ability to communicate with more than one remote station at a time. Communication between the hub and remote stations is via a line of sight radio path using directive antenna beams associated with the multi-beam antenna and the remote station antenna. The hub is able to serve and communicate with a multiplicity of fixed, line of sight remote stations using multiple hub radio transceivers co-located at the hub. Each remote station only communicates with the hub. The hub also includes received signal strength monitoring equipment with power control and can include more than one multi-beam antenna at the hub.

Claims

1. A wireless network system comprising:

a communication hub linked to a source;

at least one remote station which communicates with said communication hub in order to exchange information with the source, each of said at least one remote station including a directive antenna and a remote station address;

a multi-beam antenna connected to said communication hub to allow the exchange of information between said communication hub and each of said at least one remote station, said multi-beam antenna producing a plurality of beams for such exchange of information, wherein each beam of said plurality of beams is assigned to one of said at least one remote station; and

an Ethernet switch within and part of said hub which is linked between the source and said multi-beam antenna to provide automated switching capability between said source and said each beam of said plurality of beams to allow automated selection of a beam of said plurality of beams by one of said at least one remote station addresses.

2. The wireless network system of claim 1, wherein there is a plurality of remote stations.

3. The wireless network system of claim 1, further including a beam former linked between said hub and said multi-beam antenna.

4. The wireless network system of claim 3, wherein said beam former includes the use of a N×

N hybrid coupling matrix having N input ports and N radiating elements and wherein a value of N may be any radix 2 number.

5. The wireless network system of claim 3, wherein said beam former includes fixed microwave frequency phase delays, microwave frequency couplers, and microwave radiators.

6. The wireless network system of claim 3, wherein said beam former is in the form of stripline etched patterns on at least one circuit board.

7. The wireless network system of claim 3, wherein said beam former is in the form of microstrip etched patterns on at least one circuit board.

8. The wireless network system of claim 1, further including at least one radio transceiver as part of said hub which is linked between the source and said multi-beam antenna.

9. The wireless network system of claim 8, further including a switching matrix as part of said hub which is linked between one said at least one radio transceiver and said multi-beam antenna, said switching matrix allowing service of more than one of said at least one remote station by one radio transceiver.

10. The wireless network system of claim 8, further including a Ethernet switch as part of said hub which is linked between the source and said at least one radio transceiver.

11. The wireless network system of claim 1, further including a radio transceiver for each of said at least one remote station as part of said hub which is linked between the source and said multi-beam antenna.

12. The wireless network system of claim 11, further including a Ethernet switch as part of said hub which is linked between the source and each of said radio transceivers.

13. The wireless network system of claim 1, further including more than one multi-beam antenna and wherein each of said multi-beam antennas includes a primary service sector which forms an area of said plurality of beams of each of said multi-beam antennas.

14. The wireless network system of claim 1, further including a received signal strength indicator device at said hub to monitor received signal strength of said beams and adapt power of said beams produced by said multi-beam antenna.

15. The wireless network system of claim 1, further including a controller at said hub for frequency coordination, power control and data packet transmission.

16. The wireless network system of claim 1, further including a received signal strength indicator device at said at least one remote station to monitor received signal strength of said beams and adapt power of said beams produced by said multi-beam antenna.

17. The wireless network system of claim 1, further including a controller at said at least one remote station for frequency coordination, power control, and data packet transmission.

18. The wireless network system of claim 1, wherein said multi-beam antenna includes radiating elements on a circuit board.

19. The wireless network system of claim 18, wherein said multi-beam antenna is of a mirostrip construction.

20. The wireless network system of claim 1, wherein the source is linked to said hub by said multi-beam antenna.

21. The wireless network system of claim 20, further including at least one radio transceiver as part of said hub which is linked between a signal received by said multi-beam antenna from the source and a port of said multi-beam antenna in which the signal is directed to so that the signal may be transmitted to one of said at least one remote station.

22. The wireless network system of claim 21, further including a switching matrix as part of said hub which is linked between one said at least one radio transceiver which receives said signal from the source and said multi-beam antenna, said switching matrix allowing the service of more than one of said at least one remote station by one radio transceiver.

23. The wireless network system of claim 1, wherein adjacent beams of said plurality of beams are of a different frequency.

24. The wireless network system of claim 1, wherein each of said at least one remote station is within a 3 dB beamwidth of one of said plurality of beams.

25. The wireless network system of claim 1, wherein at least two non-adjacent beams of said plurality of beams are of a same frequency.

26. The wireless network system of claim 25, wherein said at least two non-adjacent beams and said remote stations linked to said at least two non-adjacent beams include power adjustment such that sidelobes associated with communication of one of said non-adjacent beams is minimized so as to minimize interference with said other of said non-adjacent beams which are of the same frequency.

27. The wireless network system of claim 1, wherein each of at least two remote stations that utilize a same beam of said plurality of beams for communication have a different polarization of said directive antenna at each of said remote stations.

28. The wireless network system of claim 1, wherein said multi-beam antenna is a circuit board of radiating elements covered by a radome.

29. A wireless network system comprising:

a communication hub linked to a source;

at least one remote station which communicates with said communication hub in order to exchange information with the source, each of said at least one remote station including a directive antenna and a remote station address;

a multi-beam antenna connected to said communication hub to allow the exchange of information between said communication hub and each of said at least one remote station, said multi-beam antenna producing a plurality of beams for such exchange of information, wherein each beam of said plurality of beams is assigned to one of said at least one remote station;

a beam former linked between said hub and said multi-beam antenna; and

an Ethernet switch within and part of said hub linked between the source and said beam former to provide automated switching capability between said source and said each beam of said plurality of beams to allow automated selection of a beam of said plurality of beams by one of said at least one remote station addresses.

30. The wireless network system of claim 29, further including at least one radio transceiver as part of said hub and linked between said Ethernet switch and said beam former.

31. The wireless network system of claim 30, wherein there is a plurality of remote stations.

32. The wireless network system of claim 31, further including more than one multi-beam antenna and wherein each of said multi-beam antennas includes a primary service sector in which are said plurality of beams of each of said multi-beam antennas.

33. The wireless network system of claim 29, wherein there is a plurality of remote stations.

34. The wireless network system of claim 29, further including more than one multi-beam antenna and wherein each of said multi-beam antennas includes a primary service sector in which are said plurality of beams of each of said multi-beam antennas.

35. A method of a source communicating with a plurality of remote stations using a wireless network system, the wireless network system including a communication hub linked to the source, said hub including a beam former;

at least one remote station which communicates with said communication hub in order to exchange information with the source, each of said at least one remote station including a directive antenna and a remote station address;

a multi-beam antenna connected to said communication hub to allow the exchange of information between said communication hub and each of said at least one remote station, said multi-beam antenna producing a plurality of beams for such exchange of information;

comprising;

linking each of said at least one remote station to one of said plurality of beams;

coordinating sending and receiving of the information between the source and remote station by way of the plurality of beams using the hub; and

further including an Ethernet switch within and part of said hub and linked between the source and said beam former to provide automated switching capability between said source and said each beam of said plurality of beams to allow automated selection of a beam of said plurality of beams by one of said at least one remote station addresses.

36. The method of claim 35, farther including a beam former linked between said hub and said multi-beam antenna.

37. The method of claim 36, further including more than one multi-beam antenna and wherein each of said multi-beam antennas includes a primary service sector in which are said plurality of beams of each of said multi-beam antennas.

38. The method of claim 35, further including at least one radio transceiver as part of said hub and linked between said Ethernet switch and said beam former.

39. The method of claim 38, further including more than one multi-beam antenna and wherein each of said multi-beam antennas includes a primary service sector in which are said plurality of beams of each of said multi-beam antennas.