Co-located antenna array for passive beam forming

• US 20030052828A1
• Filed: 09/11/2002
• Published: 03/20/2003
• Est. Priority Date: 09/12/2001
• Status: Active Grant

• Current Assignee: Telefonaktiebolaget LM Ericsson
• Original Assignee: Metawave Communications Corp.
• Inventors: Scherzer, Shimon B., Martek, Gary A., Gordon, Scot D.
• Granted Patent: US 6,956,537 B2
• Time in Patent Office: Days
• US Class Current: 343/700MS
• CPC Class Codes: H01Q 1/246 specially adapted for base stations
• CPC Class Codes: H01Q 21/0006 Particular feeding systems
• CPC Class Codes: H01Q 21/205 providing an omnidirectional coverage turnstile aerials H01Q21/26
• CPC Class Codes: H01Q 21/28 Combinations of substantially independent non-interacting antenna units or systems multiple beam H01Q25/00
• CPC Class Codes: H01Q 21/30 Combinations of separate antenna units operating in different wavebands and connected to a common feeder system
• CPC Class Codes: H01Q 5/42 using two or more imbricated arrays H01Q5/49 takes precedence
• CPC Class Codes: H01Q 9/28 Conical, cylindrical, cage, strip, gauze, or like elements having an extended radiating surface; Elements comprising two conical surfaces having collinear axes and adjacent apices and fed by two-conductor transmission lines waveguide horns or mouths H01Q13/00; slot antennas H01Q13/00

Abstract

Disclosed is an integrated antenna array comprising a plurality of interleaved sub-arrays separately controllable and responding to either the same or separate frequency bands. Both arrays operate with substantially the same phase center and substantially within the same effective aperture. The first sub-array of array comprises of spaced linear radiating elements such as dipoles, log-periodic, Yagi, slotted-waveguide, patch, or array consisting of the same or different elements as used in the first sub-array, either on the same or an entirely different frequency band. Independent beam shaping systems are shown for independent operation of the two arrays.

Claims

1. An antenna array comprising:

a plurality of high directivity antenna elements comprising a first sub-array and a second sub-array, wherein antenna elements of said first sub-array are interleaved with antenna elements of said second sub-array in said antenna array.

2. The antenna array of claim 1, wherein said high directivity antenna elements are disposed in a plurality of antenna element columns.

3. The antenna array of claim 2, wherein ones of said antenna element columns comprise antenna elements of said first sub-array and other ones of said antenna element columns comprise antenna elements of said second sub-array.

4. The antenna array of claim 3, wherein said antenna element columns of said first sub-array are disposed approximately ½

wavelength of a carrier associated with said first sub-array apart from a next antenna element column of said first sub-array and said antenna element columns of said second sub-array are disposed approximately ½

wavelength of said carrier associated with said first sub-array apart from a next antenna element column of said second sub-array.

5. The antenna array of claim 2, wherein said antenna element columns comprise two or more antenna elements of said plurality of high directivity antenna elements.

6. The antenna array of claim 5, wherein an antenna element column of said antenna element columns comprises antenna elements of said first sub-array and antenna elements of said second sub-array.

7. The antenna array of claim 6, wherein said antenna elements of said first sub-array and said antenna elements of said second sub-array are interleaved in said antenna element column.

8. The antenna array of claim 6, wherein a plurality of antenna elements of said first sub-array are disposed adjacent to one another in said antenna element column.

9. The antenna array of claim 6, wherein said antenna elements of said first sub-array comprise an aerial less than ½

wavelength of a carrier associated with said first sub-array and said antenna elements of said second sub-array comprise an aerial less than ½

wavelength of a carrier associated with said second sub-array.

10. The antenna array of claim 2, wherein said antenna element columns are disposed in a non-planar configuration.

11. The antenna array of claim 10, wherein said non-planar configuration comprises a portion of a cylindrical contour.

12. The antenna array of claim 10, wherein said antenna element columns are disposed having a predetermined angle α

with respect to each next adjacent antenna element column.

13. The antenna array of claim 12, wherein said predetermined angle α

is approximately 7.5°

.

14. The antenna array of claim 2, wherein said antenna element columns comprise 24 antenna element columns.

15. The antenna array of claim 14, wherein said first sub-array comprises 12 antenna element columns and said second sub-array comprises 12 antenna element columns.

16. The antenna array of claim 1, wherein said high directivity antenna elements comprise Yagi antenna elements.

17. The antenna array of claim 1, wherein said high directivity antenna elements provide spatial domain radiation dispersion in the azimuth of less than 100°

.

18. The antenna array of claim 2, wherein said antenna element columns comprise antenna element assemblies.

19. The antenna array of claim 18, wherein said antenna element assemblies comprise an antenna element card.

20. The antenna array of claim 19, wherein said antenna element card comprises antenna feed lines and a plurality of antenna elements provided structural support by a planar surface.

21. The antenna array of claim 20, wherein said antenna element card comprises 3 cladding layers, a first layer of which provides said antenna elements, a second layer of which provides a portion of said feed lines associated with antenna elements of said first sub-array, and a third layer of which provides a portion of said feed lines associated with antenna elements of said second sub-array.

22. The antenna array of claim 20, further comprising:

dielectric phase adjusters associated with said feed lines, said dielectric phase adjusters adjustable to provided controlled scanning of an antenna beam formed using said antenna array.

23. The antenna array of claim 19, wherein said antenna element assemblies further comprise a director card.

24. The antenna array of claim 23, wherein said antenna element card and said director card are comprised of a different substrate layer.

25. The antenna array of claim 23, wherein said antenna element card and said director card are comprised of a same substrate layer.

26. The antenna array of claim 1, further comprising:

a first removable personality module coupled to said antenna array, wherein said first personality module comprises a first passive beam forming network providing complex beam forming weighting with respect to signals associated with a plurality of antenna elements of said antenna array.

27. The antenna array of claim 26, further comprising:

a second removable personality module coupled to said antenna array, wherein said second personality module comprises a second passive beam forming network providing complex beam forming weighting with respect to signals associated with a plurality of antenna elements of said antenna array.

28. The antenna array of claim 27, wherein said first removable personality module is coupled to antenna elements of said first sub-array and said second removable personality module is coupled to antenna elements of said second sub-array.

29. The antenna array of claim 27, wherein said first passive beam forming network and said second passive beam forming network provide different beam forming characteristics.

30. The antenna array of claim 1, wherein said first sub-array is associated with a signal of a first communication service and said second sub-array is associated with a signal of a second communication service.

31. The antenna array of claim 30, wherein said first and second communication services operate in different bands.

32. The antenna array of claim 30, wherein said first and second communication services operate in a same band.

33. A system comprising

an antenna array having a plurality of antenna elements, ones of which are associated with a first sub-array and others of which are associated with a second sub-array;

a first removable personality module coupled to said antenna elements associated with said first sub-array, wherein said first personality module provides beam forming characteristics with respect to said first sub-array unique to particular communication attributes of a service area in which it is deployed; and

a second removable personality module coupled to said antenna elements associated with said second sub-array, wherein said second personality module provides beam forming characteristics with respect to said second sub-array unique to particular communication attributes of a service area in which it is deployed.

34. The system of claim 33, wherein said antenna elements of said first sub-array are disposed in alternate ones of antenna element columns with antenna elements of said second sub-array disposed in other alternate ones of antenna element columns.

35. The system of claim 33, wherein said antenna elements of said first sub-array are disposed in alternate ones of antenna element rows with antenna elements of said second sub-array disposed in other alternate ones of antenna element rows.

36. The system of claim 33, wherein a plurality of antenna elements of said first sub-array are disposed adjacent to one another in an antenna element column.

37. The system of claim 33, wherein said antenna array comprises a curvilinear array configuration.

38. The system of claim 33, wherein said antenna elements comprise high directivity antenna elements.

39. The system of claim 33, said first removable personality module provides a substantially different far field radiation pattern than does said second removable personality module.

40. The system of claim 33, wherein said first and second removable personality modules are adapted for plug-in field replacement.

41. A method comprising:

deploying an antenna array having at least a first plurality of antenna elements;

determining first beam forming characteristics for said first plurality of antenna elements using said deployed antenna array;

configuring a first passive feed network of a first personality module to provide said first beam forming characteristics; and

installing said first personality module in said deployed antenna array to thereby provide a desired first antenna beam.

42. The method of claim 41, wherein said antenna array has a second plurality of antenna elements, said method further comprising:

determining second beam forming characteristics for said second plurality of antenna elements using said deployed antenna array;

configuring a second passive feed network of a second personality module to provide said second beam forming characteristics; and

installing said second personality module in said deployed antenna array to thereby provide a desired second antenna beam, wherein said first antenna beam and said second antenna beam provide different antenna beam contours.

43. The method of claim 41, further comprising:

redetermining said first beam forming characteristics for said first plurality of antenna elements using said deployed antenna array;

configuring a third passive feed network of a third personality module to provide said redetermined first beam forming characteristics;

removing said first personality module from said deployed antenna array; and

installing said third personality module in said deployed antenna array in place of said first personality module.

44. The method of claim 41, wherein said antenna elements of said first plurality of antenna elements comprise high directivity antenna elements.