Adjustable antenna system for a portable radio unit in a satellite communication system

• US 5,990,839 A
• Filed: 04/08/1998
• Issued: 11/23/1999
• Est. Priority Date: 04/10/1997
• Status: Expired due to Term

• Current Assignee: Optis Cellular Technology LLC (Brevet Capital)
• Original Assignee: Telefonaktiebolaget LM Ericsson
• Inventors: Reinefjord, Jan Staffan, Schefte, deceased, Henry, Derneryd, Sven Anders Gosta
• Primary Examiner(s): Le, Hoanganh
• Application Number:
  US09/057,367
• Time in Patent Office: 594 Days
• Field of Search: 343/702, 343/700 MS, 343/846, 343/893, 343/880, 343/881, 343/882, 455/89, 455/90
• US Class Current: 343/702
• CPC Class Codes: H01Q 1/242 specially adapted for hand-held use
• CPC Class Codes: H01Q 1/245 with means for shaping the antenna pattern, e.g. in order to protect user against rf exposure
• CPC Class Codes: H01Q 21/065 Patch antenna array
• CPC Class Codes: H01Q 3/2605 Array of radiating elements provided with a feedback control over the element weights, e.g. adaptive arrays

Abstract

The present invention relates to an antenna unit for a portable radio unit capable of operating in a satellite communication mode. The antenna unit includes a first and a second conformal u-shaped antenna body which are movably arranged to each other. Each of the antenna bodies have a top surface and two outer surfaces. The second antenna body can be slid in and out of the first antenna body. The first antenna body has an array of patches on the top surface and on both of its outer surfaces to receive radio signals. The second antenna body has an array of patches on the top surface and on both of its outer surfaces to transmit radio signals. The antenna unit is coupled to the terminal unit by a hinge which enables the antenna unit to be folded onto the terminal unit.

Claims

1. An antenna unit for transmitting and receiving signals from/to a portable radio terminal unit, wherein said antenna unit is movably attached to said radio terminal, said antenna unit comprising:

a first antenna body with reception means for receiving radio signals;

a second antenna body with transmitting means for transmitting radio signals, said second antenna body arranged to be slidingly inserted into and slidingly pulled out of said first antenna body; and

wherein said first antenna body comprises;

a first and a second side portion;

a first and a second end portion; and

a top and a bottom surface, where said bottom surface has a first portion which is extending in a longitudinal direction next to said first side portion and a second portion which is extending in a longitudinal direction next to said second side portion; and

wherein said second antenna body comprises;

a first and a second side portion;

a first and a second end portion; and

a top and a bottom surface, where said bottom surface has a first portion which is extending in a longitudinal direction next to said first side portion of said second antenna body and a second portion which is extending in a longitudinal direction next to said second side portion of said second antenna body.

2. The antenna unit as claimed in claim 1, characterized in that a first array of patches is arranged on said top surface of said first antenna body and that a second array of patches is arranged on said top surface of said second antenna body.

3. The antenna unit as claimed in claim 1, characterized in that said antenna unit comprises a first attachment coupled to the first end portion of the first antenna body, where said first attachment is arranged to be attached to said terminal unit.

4. The antenna unit as claimed in claim 3, characterized in that said first attachment is arranged to enable the antenna to be folded onto said terminal unit, unfolded from said terminal unit, and positioned at a specified first angle related to said terminal unit.

5. The antenna unit as claimed in claim 1, characterized in that a battery unit being attached on said bottom surface of said second antenna body to supply power to the transmitting and reception means.

6. The antenna unit as claimed in claim 1, characterized in that a second attachment is coupled to the second end portion of the first antenna body and to the first end portion of the second antenna body.

7. The antenna unit as claimed in claim 6, characterized in that said second attachment is arranged to enable the second antenna body to be folded onto the first antenna body in such a way that the top surface of the second antenna body faces the top surface of the first antenna body.

8. The antenna unit as claimed in claim 7, characterized in that said second attachment is arranged to enable the second antenna body to be unfolded from the first antenna body and to maintain its position in such a way that a normal vector of the top surface of the second antenna body faces the same direction as a normal vector of the top surface of the first antenna body.

9. The antenna unit as claimed in claim 6, characterized in that said second attachment is arranged to enable the second antenna body to be folded onto the first antenna body in such a way that the bottom surface of the second antenna body faces the bottom surface of the first antenna body.

10. The antenna unit as claimed in claim 9, characterized in that said second attachment is arranged to enable the second antenna body to be unfolded from the first antenna body and to maintain its position in such a way that a normal vector of the top surface of the second antenna body faces the same direction as a normal vector of the top surface of the first antenna body.

11. The antenna unit as claimed in claim 6, characterized in that a battery unit being attached on said bottom surface of said second antenna body to supply power to the transmitting and reception means.

12. The antenna unit as claimed in claim 6, characterized in that a battery unit being attached on said bottom surface of said first antenna body to supply power to the transmitting and reception means.

13. The antenna unit as claimed in claim 6, characterized in that battery units being attached on said bottom surface of said first antenna body and on said bottom surface of said second antenna body to supply power to the transmitting and reception means.

14. The antenna unit as claimed in claim 1, characterized in that a second attachment is coupled to the second end portion of the first antenna body and to the first end portion of the second antenna body, where said attachment comprises a first and a second end portion.

15. The antenna unit as claimed in claim 14, characterized in that said attachment is arranged to enable the second antenna body and the first antenna body to be folded onto each other in such a way that the bottom surface of the second antenna body faces the bottom surface of the first antenna body.

16. The antenna unit as claimed in claim 14, characterized in that said first end portion of said attachment is coupled to a first guide, and said second end portion of said attachment is coupled to a second guide, where said guides are movably attached to the terminal unit.

17. The antenna unit as claimed in claim 14, characterized in that said first guide is attached to a first rail and that said second guide is attached to a second rail on the back of said terminal unit, which enables said antenna unit to be moved up and down along said terminal unit.

18. The antenna unit as claimed in claim 14, characterized in that a battery unit being attached on said bottom surface of said second antenna body to supply power to the transmitting and reception means.

19. An antenna unit as claimed in claim 14, characterized in that a battery unit being attached on said bottom surface of said first antenna body to supply power to the transmitting and reception means.

20. The antenna unit as claimed in claim 14, characterized in that battery units being attached on said bottom surface of said first antenna body and on said bottom surface of said second antenna body to supply power to the transmitting and reception means.

21. An antenna unit for transmitting and receiving signals from/to a portable radio terminal unit, wherein said antenna unit is movably attached to said radio terminal, said antenna unit comprising:

a first antenna body with reception means for receiving radio signals;

a second antenna body with transmitting means for transmitting radio signals, said first antenna body and said second antenna body moveably arranged to each other; and

wherein said first antenna body comprises;

a first and a second side portion;

a first and a second end portion; and

a top and a bottom surface, where said bottom surface has a first portion which is extending in a longitudinal direction next to said first side portion and a second portion which is extending in a longitudinal direction next to said second side portion; and

wherein said second antenna body comprises;

a first and a second side portion;

a first and a second end portion;

a top and a bottom surface, where said bottom surface has a first portion which is extending in a longitudinal direction next to said first side portion of said second antenna body and a second portion which is extending in a longitudinal direction next to said second side portion of said second antenna body; and

a first and a second extension arranged along its first and second side portion respectively in a conformal configuration, wherein each of said extensions has an outer surface facing from each other in substantially opposite directions.

22. The antenna unit as claimed in claim 21, characterized in that said transmitting means includes an array of patches arranged on each of said outer surfaces on said extensions of said second antenna body.

23. The antenna unit as claimed in claim 22, characterized in that said extensions of said first antenna body are arranged to be positioned at a second angle related to said top surface of said first antenna body and that said extensions of said second antenna body are arranged to be positioned at a third angle related to said top surface of said second antenna body.

24. The antenna unit as claimed in claim 23, characterized in that each of said second and third angles are 90 degrees.

25. An antenna unit for transmitting and receiving signals from/to a portable radio terminal unit, wherein said antenna unit is movably attached to said radio terminal, said antenna unit comprising:

a first antenna body with reception means for receiving radio signals;

a second antenna body with transmitting means for transmitting radio signals, said first antenna body and said second antenna body moveably arranged to each other; and

wherein said first antenna body comprises;

a first and a second side portion;

a first and a second end portion;

a top and a bottom surface, where said bottom surface has a first portion which is extending in a longitudinal direction next to said first side portion and a second portion which is extending in a longitudinal direction next to said second side portion; and

a first and a second extension arranged along its first and second side portion, respectively in a conformal configuration, wherein each of said extensions has an outer surface facing from each other in substantially opposite directions; and

wherein said second antenna body comprises;

a first and a second side portion;

a first and a second end portion; and

a top and a bottom surface, where said bottom surface has a first portion which is extending in a longitudinal direction next to said first side portion of said second antenna body and a second portion which is extending in a longitudinal direction next to said second side portion of said second antenna body.

26. An antenna unit for transmitting and receiving signals from/to a portable radio terminal unit, wherein said antenna unit is movably attached to said radio terminal, said antenna unit comprising:

a first antenna body with reception means for receiving radio signals;

a second antenna body with transmitting means for transmitting radio signals, said first antenna body and said second antenna body moveably arranged to each other; and

wherein said first antenna body comprises;

a first and a second side portion;

a first and a second end portion; and

a top and a bottom surface, where said bottom surface has a first portion which is extending in a longitudinal direction next to said first side portion and a second portion which is extending in a longitudinal direction next to said second side portion; and

wherein said second antenna body comprises;

a first and a second side portion;

a first and a second end portion;

a top and a bottom surface, where said bottom surface has a first portion which is extending in a longitudinal direction next to said first side portion of said second antenna body and a second portion which is extending in a longitudinal direction next to said second side portion of said second antenna body; and

a guide along said first and second side portion of said second antenna body and that said first antenna body comprises a rail attached to said first and second side portion of the first antenna body, where said guides are arranged to be inserted into said rails.

27. An antenna unit for transmitting and receiving signals from/to a portable radio terminal unit, wherein said antenna unit is movably attached to said radio terminal, said antenna unit comprising:

a first antenna body with reception means for receiving radio signals;

a second antenna body with transmitting means for transmitting radio signals, said first antenna body and said second antenna body moveably arranged to each other; and

wherein said first antenna body comprises;

a first and a second side portion;

a first and a second end portion;

a top and a bottom surface, where said bottom surface has a first portion which is extending in a longitudinal direction next to said first side portion and a second portion which is extending in a longitudinal direction next to said second side portion; and

two extensions arranged on and along the respectively first and second portion of said bottom surface of said first antenna body, wherein each of said extensions has an outer surface facing from each other in substantially opposite directions; and

wherein said second antenna body comprises;

a first and a second side portion;

a first and a second end portion;

a top and a bottom surface, where said bottom surface has a first portion which is extending in a longitudinal direction next to said first side portion of said second antenna body and a second portion which is extending in a longitudinal direction next to said second side portion of said second antenna body; and

wherein the antenna unit further comprises a second attachment coupled to the second end portion of the first antenna body and to the first end portion of the second antenna body.

28. The antenna unit as claimed in claim 27, characterized in that said extensions on said first antenna body are foldable arranged on said first antenna body.

29. The antenna unit as claimed in claim 28, characterized in that each of said extensions on said first antenna body being arranged to be folded against said bottom surface of said first antenna body.

30. The antenna unit as claimed in claims 27, characterized in that said reception means includes an array of patches arranged on each of said outer surfaces on said extensions of said first antenna body.

31. An antenna unit for transmitting and receiving signals from/to a portable radio terminal unit, wherein said antenna unit is movably attached to said radio terminal, said antenna unit comprising:

a first antenna body with reception means for receiving radio signals;

a second antenna body with transmitting means for transmitting radio signals, said first antenna body and said second antenna body moveably arranged to each other; and

wherein said first antenna body comprises;

a first and a second side portion;

a first and a second end portion; and

a top and a bottom surface, where said bottom surface has a first portion which is extending in a longitudinal direction next to said first side portion and a second portion which is extending in a longitudinal direction next to said second side portion; and

wherein said second antenna body comprises;

a first and a second side portion;

a first and a second end portion; and

a top and a bottom surface, where said bottom surface has a first portion which is extending in a longitudinal direction next to said first side portion of said second antenna body and a second portion which is extending in a longitudinal direction next to said second side portion of said second antenna body; and

two extensions arranged on and along the respectively first and second portion of said bottom surface of said second antenna body, where each of said extensions has an outer surface facing from each other in substantially opposite directions; and

wherein the antenna unit further comprises a second attachment coupled to the second end portion of the first antenna body and to the first end portion of the second antenna body.

32. The antenna unit as claimed in claim 31, characterized in that said extensions on said second antenna body are foldable arranged on said second antenna body.

33. The antenna unit as claimed in claim 32, characterized in that each of said extensions on said second antenna body being arranged to be folded against said bottom surface of said second antenna body.

34. The antenna unit as claimed in claim 31, characterized in that said transmitting means includes an array of patches arranged on each of said outer surfaces on said extensions of said second antenna body.

35. The antenna unit as claimed in claim 31, characterized in that said ex tensions of said first antenna body are arranged to be positioned at a second angle related to said top surface of said first antenna body, and that said extensions of said second antenna body are arranged to be positioned at a third angle related to said top surface of said second antenna body.

36. An antenna unit for transmitting and receiving signals from/to a portable radio terminal unit, wherein said antenna unit is movably attached to said radio terminal, said antenna unit comprising:

a first antenna body with reception means for receiving radio signals;

a second antenna body with transmitting means for transmitting radio signals, said first antenna body and said second antenna body moveably arranged to each other; and

wherein said first antenna body comprises;

a first and a second side portion;

a first and a second end portion; and

a top and a bottom surface, where said bottom surface has a first portion which is extending in a longitudinal direction next to said first side portion and a second portion which is extending in a longitudinal direction next to said second side portion; and

wherein said second antenna body comprises;

a first and a second side portion;

a first and a second end portion; and

a top and a bottom surface, where said bottom surface has a first portion which is extending in a longitudinal direction next to said first side portion of said second antenna body and a second portion which is extending in a longitudinal direction next to said second side portion of said second antenna body; and

wherein the antenna unit further comprises a second attachment coupled to the second end portion of the first antenna body and to the first end portion of the second antenna body, where said attachment comprises a first and second end portion; and

wherein said first antenna body further comprises two extensions arranged on and along the respectively first and second portion of said bottom surface of said first antenna body, where each of said extensions has an outer surface facing from each other in substantially opposite directions, where said reception means includes an array of patches arranged on each of said outer surfaces.

37. The antenna unit as claimed in claim 36, characterized in that said extensions on said first antenna body are foldable arranged on said first antenna body.

38. The antenna unit as claimed in claim 36, characterized in that said second antenna body comprises two extensions arranged on and along the respectively first and second portion of said bottom surface of said second antenna body, where each of said extensions has an outer surface facing from each other in substantially opposite directions, where said reception means includes an array of patches arranged on each of said outer surfaces.

39. The antenna unit as claimed in claim 38, characterized in that said extensions on said second antenna body are foldable arranged on said second antenna body.

40. A portable radio unit including a terminal unit with radio transmitting and receiving circuits elements and a movably attached antenna unit, said antenna unit comprising:

a first antenna body with a first array of patches with electrically steerable beams for receiving radio signals;

a second antenna body with a second array of patches with electrically steerable beams for transmitting radio signals; and

wherein said first antenna body and said second antenna body are movably arranged to each other; and

further wherein said second antenna body is arranged to be slidingly inserted into and slidingly pulled out of said first antenna body.

41. The portable radio unit as claimed in claim 40, characterized in that a second attachment is coupled to a second end portion of the first antenna body and to a first end portion of the second antenna body, where said second attachment is arranged to enable the second antenna body to be folded onto the first antenna body in such a way that a top surface of the second antenna body faces a top surface of the first antenna body.

42. The portable radio unit as claimed in claim 40, characterized in that a second attachment is coupled to a second end portion of the first antenna body and to a first end portion of the second antenna body, where said second attachment is arranged to enable the second antenna body to be folded onto the first antenna body in such a way that a bottom surface of the second antenna body faces a bottom surface of the first antenna body.

43. A portable radio unit including a terminal unit with radio transmitting and receiving circuits elements and a movably attached antenna unit, said antenna unit comprising:

a first antenna body with a first array of patches with electrically steerable beams for receiving radio signals;

a second antenna body with a second array of patches with electrically steerable beams for transmitting radio signals; and

wherein said first antenna body and said second antenna body are movably arranged to each other; and

further wherein said first antenna body further comprises two extensions where each of said extensions has an outer surface facing from each other in substantially opposite directions, and where said reception means includes an array of patches arranged on each of said outer surfaces on said extensions of said first antenna body.

44. A portable radio unit including a terminal unit with radio transmitting and receiving circuits elements and a movably attached antenna unit, said antenna unit comprising:

a first antenna body with a first array of patches with electrically steerable beams for receiving radio signals;

a second antenna body with a second array of patches with electrically steerable beams for transmitting radio signals; and

wherein said first antenna body and said second antenna body are movably arranged to each other; and

further wherein said second antenna body includes two extensions where each of said extensions has an outer surface facing from each other in substantially opposite directions, and where said transmitting means includes an array of patches arranged on each of said outer surfaces on said extensions of said second antenna body.