Modified printed dipole antennas for wireless multi-band communication systems

• US 20060208956A1
• Filed: 04/28/2006
• Published: 09/21/2006
• Est. Priority Date: 11/24/2003
• Status: Abandoned Application

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Iancu, Daniel, Glossner, John, Surducan, Emanoil
• Application Number:
  US11/413,589
• Publication Number:
  US 20060208956A1
• Time in Patent Office: Days
• US Class Current: 343/795
• 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 19/005 Patch antenna using one or more coplanar parasitic elements
• CPC Class Codes: H01Q 19/24 the primary active element being centre-fed and substantially straight, e.g. H-antenna
• 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 5/371 Branching current paths
• CPC Class Codes: H01Q 5/378 Combination of fed elements with parasitic elements
• 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
• CPC Class Codes: H01Q 9/285 Planar dipole H01Q9/065 takes precedence; patch antenna H01Q9/0407

Abstract

A dipole antenna for a wireless communication device, which includes a first conductive element superimposed on a portion of and separated from a second conductive element by a first dielectric layer. A first conductive via connects the first and second conductive elements through the first dielectric layer. The second conductive element is generally U-shaped. The second conductive element includes a plurality of spaced conductive strips extending transverse from adjacent ends of the legs of the U-shape. Each strip is dimensioned for a different center frequency λ0. The first conductive element may be replaced by a coaxial feed directly to the second conductive element.

Claims

1. A dipole antenna for a wireless communication device comprising:

a first conductive element superimposed a portion of and separated from a second conductive element by a first dielectric layer;

a first conductive via connects the first and second conductive elements through the first dielectric layer;

the second conductive element being generally U-shaped;

the second conductive element including a plurality of spaced conductive strips extending transverse from adjacent ends of the legs of the U-shape;

at least one of the strips on each leg is T-shape;

at least one of the strips on each leg is other than a T-shape; and

each strip extending from a leg being dimensioned for a different λ

o than another strip of the leg.

2. The antenna according to claim 1, wherein the first conductive element is L-shaped.

3. The antenna according to claim 2, wherein one of the legs of the L-shape is superimposed one of the legs of the U-shape.

4. The antenna according to claim 3, wherein the first conductive via connects the other leg of the L-shape to the other leg of the U-shape.

5. The antenna according to claim 2, wherein the first conductive via connects an end of one of the legs of the L-shape to one of the legs of the U-shape.

6. The antenna according to claim 1, wherein the first and second conductive elements are each planar.

7. The antenna according to claim 1, wherein each strip has a width less than 0.05λ

o and a length of less than 0.5λ

o.

17. The antenna according to claim 1, wherein the first dielectric layer is a substrate, and the first and second conductive elements are printed elements on the substrate.

18. The antenna according to claim 1, wherein the plurality of strips are parallel to each other.

25. The antenna according to claim 1, wherein at least one of the strips is generally shaped as a claw hammer.

34. A wireless communication device including the antenna of claim 1.

8-16. -16. (canceled)

19. (canceled)

20. (canceled)

24. (canceled)

26-33. -33. (canceled)

35. A dipole antenna for a wireless communication device comprising:

a generally U-shaped first conductive element on a first dielectric layer;

the first conductive element including a plurality of spaced conductive strips extending transverse from adjacent ends of the legs of the U-shape;

at lease one of the strips on each leg is T-shaped;

at least one of the strips on each leg, is other than a T-shape;

each strip extending from a leg being dimensioned for a different λ

o than another strip of the leg; and

a coaxial feed, having inner and outer conductors, each connected to a leg of the U-shape.

36. The antenna according to claim 35, wherein the first dielectric layer is a substrate, and the first conductive element is printed on the substrate.

37. The antenna according to claim 35, wherein the plurality of strips are parallel to each other.

44. The antenna according to claim 35, wherein at least one of the strips is generally shaped as a claw hammer.

53. The antenna according to claim 35, including a second conductive element having first and second portions each superimposed the strips extending from one of the legs of the U-shape and separated there from by the first conductive layer.

54. A wireless communication device including the antenna of claim 35.

38. (canceled)

39. (canceled)

43. (canceled)

45-52. -52. (canceled)

55. (canceled)

56. (canceled)

57. A dipole antenna for a wireless communication device comprising:

a first conductive element superimposed a portion of and separated from a second conductive element by a first dielectric layer;

a first conductive via connects the first and second conductive elements through the first dielectric layer;

the second conductive element being generally U-shaped;

the second conductive element including a plurality of spaced conductive strips extending along an axis transverse from adjacent ends of the legs of the U-shape;

at least one of the strips on each leg being serpentine and curving along the axis; and

each strip extending from a leg being dimensioned for a different λ

o than another strip of the leg.

21. The antenna according to claim 57, wherein the serpentine is sinusoidal.

22. The antenna according to claim 57, wherein the serpentine is triangular.

23. The antenna according to claim 57, wherein the serpentine is rectangular.

58. A dipole antenna for a wireless communication device comprising:

a generally U-shaped first conductive element on a first dielectric layer;

the first conductive element including a plurality of spaced conductive strips extending transverse along an axis from adjacent ends of the legs of the U-shape;

at least one of the strips on each leg being serpentine and curving along the axis; and

each strip extending from a leg being and dimensioned for a different λ

o than another strip of the leg.

40. The antenna according to claim 58, wherein the serpentine is sinusoidal.

41. The antenna according to claim 58, wherein the serpentine is triangular.

42. The antenna according to claim 58, wherein the serpentine is rectangular.