Antenna

• US 7,898,480 B2
• Filed: 05/05/2006
• Issued: 03/01/2011
• Est. Priority Date: 05/05/2005
• Status: Active Grant

• Current Assignee: Joyson Safety Systems Acquisition, LLC
• Original Assignee: Automotive Systems Laboratory, Incorporated (Ningbo Junsheng Investment Group Co., Ltd.)
• Inventors: Rebeiz, Gabriel M., White, Carson, Ebling, James P.
• Primary Examiner(s): Dinh; Trinh V
• Application Number:
  US11/382,011
• Publication Number:
  US 20070001918A1
• Time in Patent Office: 1,761 Days
• Field of Search: None
• US Class Current: 343/700.0MS
• CPC Class Codes: G01S 13/931 of land vehicles
• CPC Class Codes: H01Q 1/38 formed by a conductive layer on an insulating support patch antennas H01Q9/0407; microstrip dipole antennas H01Q9/065; microstrip slot antennas H01Q13/106; transmission line microstrip antennas H01Q13/206; manufacturing reflecting surfaces using insulating material for supporting the reflecting surface H01Q15/142
• CPC Class Codes: H01Q 15/02 Refracting or diffracting devices, e.g. lens, prism
• CPC Class Codes: H01Q 19/09 wherein the primary active element is coated with or embedded in a dielectric or magnetic material protective material H01Q1/40, varying the electric or magnetic characteristics of refracting or diffracting devices H01Q3/44
• CPC Class Codes: H01Q 21/0006 Particular feeding systems
• CPC Class Codes: H01Q 21/0087 Apparatus or processes specially adapted for manufacturing antenna arrays manufacturing waveguides H01P11/00
• 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
• CPC Class Codes: H01Q 3/30 varying the relative phase between the radiating elements of an array H01Q3/2605, H01Q3/2658, H01Q3/2682, H01Q3/44 take precedence
• CPC Class Codes: H01Q 3/46 Active lenses or reflecting arrays

Abstract

An antenna comprises a dielectric material having first and second surfaces, a discrete lens array operatively coupled to the first surface, and at least one broadside feed antenna operatively coupled to the second surface.

Claims

1. An antenna, comprising:

a. a dielectric material comprising first and second surfaces on opposing sides of said dielectric material;

b. a discrete lens array operatively coupled to said first surface of said dielectric material; and

c. at least one broadside feed antenna operatively coupled to said second surface of said dielectric material, wherein said at least one broadside feed antenna cooperates with said discrete lens array through said dielectric material between said first and second surfaces thereof so as to provide for either radiating electromagnetic energy through said dielectric material to said discrete lens array or receiving electromagnetic energy from said discrete lens array through said dielectric material.

2. An antenna as recited in claim 1, wherein said discrete lens array comprises a plurality of electromagnetic lens elements, wherein each electromagnetic lens element of said plurality of electromagnetic lens elements comprises:

a. first and second conductive patch elements;

b. at least one dielectric layer interposed between said first and second conductive patch elements, wherein said first conductive patch element is located on a first surface of said at least one dielectric layer, and said second conductive patch element is located on a second surface of said at least one dielectric layer; and

c. at least one delay element operative between said first and second conductive patch elements;

wherein said first and second conductive patch elements are located on respective first and second sides of said discrete lens array, said first side of said discrete lens array is adapted to be in electromagnetic wave communication with said at least one broadside feed antenna, said at least one delay element operative between said first and second conductive patch elements delays a propagation of an electromagnetic wave between said first and second conductive patch elements by a delay period, and said delay period of at least one of said plurality of electromagnetic lens elements is different from a delay period of at least another of said plurality of electromagnetic lens elements.

3. An antenna as recited in claim 1, wherein said first surface of said dielectric material comprises a substantially flat surface.

4. An antenna as recited in claim 1, wherein said second surface of said dielectric material comprises a substantially flat surface.

5. An antenna as recited in claim 1, wherein said first and second surfaces of said dielectric material comprise substantially flat surfaces that are substantially parallel to one another.

6. An antenna as recited in claim 1, wherein said discrete lens array comprises a nominal focal surface, said nominal focal surface is curved, and at least a portion of said second surface of said dielectric material is curved so as to substantially follow said nominal focal surface.

7. An antenna as recited in claim 1, wherein said discrete lens array is bonded to said first surface of said dielectric material.

8. An antenna as recited in claim 1, wherein said at least one broadside feed antenna is bonded to said second surface of said dielectric material.

9. An antenna as recited in claim 1, wherein at least one said at least one broadside feed antenna is either a dipole antenna, a patch antenna, a slot antenna, or a microstrip antenna.

10. An antenna as recited in claim 1, wherein said at least one broadside feed antenna comprises a plurality of broadside feed antennas.

11. An antenna as recited in claim 10, wherein at least a portion of said plurality of broadside feed antennas comprise a one-dimensional array of broadside feed antennas.

12. An antenna as recited in claim 11, wherein at least a portion of said plurality of broadside feed antennas comprise a plurality of one- dimensional arrays of broadside feed antennas, and at least two of said plurality of one-dimensional arrays of broadside feed antennas are oriented in different directions.

13. An antenna as recited in claim 1, further comprising a dielectric substrate, wherein said at least one broadside feed antenna is attached to said dielectric substrate, said dielectric substrate is attached to said second surface of said dielectric material, and said dielectric substrate is adapted to provide for coupling at least one signal to said at least one broadside feed antenna.

14. An antenna as recited in claim 13, further comprising a switching network and a corporate feed, wherein said at least one broadside feed antenna comprises a plurality of broadside feed antennas, said switching network is adapted to control which of said plurality of broadside feed antennas are operatively coupled to said corporate feed, and said switching network in operatively coupled to said dielectric substrate.

15. An antenna as recited in claim 2, wherein said at least one dielectric layer comprises first and second dielectric substrates, said first conductive patch element is located on a first surface of said first dielectric substrate, said second conductive patch element is located on a second surface of said second dielectric substrate, further comprising a conductive layer between said first and second dielectric substrates, wherein said conductive layer incorporates at least one slot located between said first and second conductive patch elements of said electromagnetic lens element, and said at least one slot is adapted to provide for said delay period of said electromagnetic lens element.

16. An antenna as recited in claim 15, wherein said at least one slot comprises a U-shaped slot.

17. An antenna as recited in claim 2, wherein said at least one dielectric layer comprises a single dielectric layer, said first and second surfaces of said at least one dielectric layer are on opposing surfaces of said single dielectric layer, said first surface of said at least one dielectric layer faces said first side of said discrete lens array, and said second surface of said at least one dielectric layer faces said second side of said discrete lens array.

18. An antenna as recited in claim 2, wherein said at least one delay element comprises at least one transmission line that operates in cooperation with said at least one dielectric layer.

19. An antenna as recited in claim 18, wherein a first end of said at least one transmission line is operatively coupled to said first conductive patch element, and a second end of said at least one transmission line is operatively coupled to said second conductive patch element.

20. An antenna as recited in claim 19, wherein said at least one transmission line comprises a conductive interconnection through said at least one dielectric layer.

21. An antenna as recited in claim 20, wherein said at least one transmission line is located on at least one of said first and second surfaces of said at least one dielectric layer.

22. An antenna as recited in claim 21, wherein said at least one transmission line is located along a path that substantially follows a peripheral contour of at least one of said first and second conductive patch elements proximally adjacent to said at least one of said first and second conductive patch elements.

23. An antenna as recited in claim 21, wherein said at least one transmission line comprises first and second transmission lines, a first end of said first transmission line is operatively coupled to said first conductive patch element at a first location, a second end of said first transmission line is operatively coupled to a first end of said conductive interconnection through said at least one dielectric layer, said first transmission line is operatively associated with said first surface of said at least one dielectric layer, a first end of said second transmission line is operatively coupled to said second conductive patch element at a second location, a second end of said second transmission line is operatively coupled to a second end of said conductive interconnection through said at least one dielectric layer, and said second transmission line is operatively associated with said second surface of said at least one dielectric layer.

24. An antenna as recited in claim 23, wherein said first and second locations are substantially aligned in opposition to one another across said at least one dielectric layer.

25. An antenna as recited in claim 2, wherein a first end of said at least one delay element is operatively coupled to said first conductive patch element at a first location, a second end of said at least one delay element is operatively coupled to said second conductive patch element at a second location, and said first and second locations are displaced from one another so as to provide for rotating a polarization of said electromagnetic wave at said second conductive patch element relative to said polarization at said first conductive patch element.

26. An antenna as recited in claim 2, wherein said at least one dielectric layer comprises at least first and second dielectric layers, said first surface of said at least one dielectric layer comprises a first surface of said first dielectric layer, said second surface of said at least one dielectric layer comprises a first surface of said second dielectric layer, further comprising a conductive layer interposed between a second surface of said first dielectric layer and a second surface of said second dielectric layer, wherein said at least one delay element is interconnected with an interconnection through said first and second dielectric layers and through said conductive layer, and said interconnection is insulated from said conductive layer.

27. An antenna as recited in claim 2, wherein said at least one dielectric layer comprises at least first and second dielectric layers, said first surface of said at least one dielectric layer comprises a first surface of said first dielectric layer, said second surface of said at least one dielectric layer comprises a first surface of said second dielectric layer, said at least one delay element comprises at least one transmission line interposed between a second surface of said first dielectric layer and a second surface of said second dielectric layer, a first end of said at least one delay element is operatively coupled to said first conductive patch element with a first conductive interconnection through said first dielectric layer, and a second end of said at least one delay element is operatively coupled to said second conductive patch element with a second conductive interconnection through said second dielectric layer.

28. An antenna as recited in claim 27, wherein said at least one delay element comprises a loop portion, and said loop portion is at least partially shadowed by said first and second conductive patch elements.

29. An antenna as recited in claim 27, further comprising a conductive layer interposed between said second surface of said first dielectric layer and said second surface of said second dielectric layer, wherein said conductive layer is insulated from said at least one delay element.

30. An antenna as recited in claim 2, wherein said at least one dielectric layer comprises at least first, second and third dielectric layers, said first surface of said at least one dielectric layer comprises a first surface of said first dielectric layer, said second surface of said at least one dielectric layer comprises a first surface of said second dielectric layer, said third dielectric layer is interposed between said first and second dielectric layers, further comprising a conductive layer interposed between said second and third dielectric layers, wherein said at least one delay element comprises at least one transmission line interposed between a second surface of said first dielectric layer and said third dielectric layer, a first end of said at least one delay element is operatively coupled to said first conductive patch element with a first conductive interconnection through said first dielectric layer, a second end of said at least one delay element is operatively coupled to said second conductive patch element with a second conductive interconnection through said second and third dielectric layers and through said conductive layer, and said second conductive interconnection is insulated from said conductive layer.

31. An antenna as recited in claim 30, wherein said at least one delay element is at least partially shadowed by said first and second conductive patch elements.

32. An antenna as recited in claim 2, wherein said at least one dielectric layer comprises at least first, second, third and fourth dielectric layers, said first surface of said at least one dielectric layer comprises a first surface of said first dielectric layer, said second surface of said at least one dielectric layer comprises a first surface of said second dielectric layer, said third dielectric layer is interposed between said first and second dielectric layers, said fourth dielectric layer is interposed between said third and second dielectric layers, further comprising a conductive layer interposed between said third and fourth dielectric layers, wherein said at least one delay element comprises first and second transmission lines, said first transmission line is interposed between said first and third dielectric layers, said second transmission line is interposed between said second and fourth dielectric layers, a first end of said first transmission line is operatively coupled to said first conductive patch element with a first conductive interconnection through said first dielectric layer, a first end of said second transmission line is operatively coupled to said second conductive patch element with a second conductive interconnection through said second dielectric layer, second ends of said first and second transmission lines are operatively coupled to one another with a third conductive interconnection through said third and fourth dielectric layers and through said conductive layer, and said third conductive interconnection is insulated from said conductive layer.

33. An antenna as recited in claim 32, wherein said at least one delay element is at least partially shadowed by said first and second conductive patch elements.

34. An antenna as recited in claim 2, wherein at least one of said first and second conductive patch elements comprises either a circular shape, a rectangular shape, a square shape, a triangular shape, a pentagonal shape, a hexagonal shape, or a polygonal shape.

35. An antenna as recited in claim 2, wherein said delay period for each of said plurality of electromagnetic lens elements in said discrete lens array is adapted with respect to a corresponding plurality of locations of said plurality of electromagnetic lens elements in said discrete lens array so that said discrete lens array emulates a dielectric electromagnetic lens selected from an at least partially spherical dielectric electromagnetic lens, an at least partially cylindrical dielectric electromagnetic lens, an at least partially elliptical dielectric electromagnetic lens, and an at least partially rotational dielectric electromagnetic lens.

36. An antenna as recited in claim 1, wherein said discrete lens array comprises a plurality of electromagnetic lens elements, wherein each electromagnetic lens element of said plurality of electromagnetic lens elements comprises:

a conductive layer;

a conductive patch element;

at least one dielectric layer interposed between said conductive patch element and said conductive layer, and at least one delay element operative between said conductive patch element and said conductive layer.

37. An antenna as recited in claim 36, wherein said at least one delay element comprises at least one transmission line that operates in cooperation with said at least one dielectric layer, a first end of said at least one transmission line is operatively coupled to said conductive patch element, a second end of said at least one transmission line is operatively coupled to said conductive layer, and said at least one transmission line comprises a conductive interconnection through said at least one dielectric layer.

38. An antenna as recited in claim 36, wherein a delay period for each of said plurality of electromagnetic lens elements of said discrete lens array is adapted with respect to a corresponding plurality of locations of said plurality of electromagnetic lens elements of said discrete lens array so that said discrete lens array emulates a dielectric electromagnetic lens selected from an at least partially spherical dielectric electromagnetic lens, an at least partially cylindrical dielectric electromagnetic lens, an at least partially elliptical dielectric electromagnetic lens, and an at least partially rotational dielectric electromagnetic lens.