Low profile partially loaded patch antenna

• US 7,528,779 B2
• Filed: 10/25/2006
• Issued: 05/05/2009
• Est. Priority Date: 10/25/2006
• Status: Expired due to Fees

• Current Assignee: Laird Technologies Incorporated (DuPont de Nemours, Inc.)
• Original Assignee: Laird Technologies Incorporated (DuPont de Nemours, Inc.)
• Inventors: Stutzke, Nathan
• Primary Examiner(s): Ho; Tan
• Application Number:
  US11/552,868
• Publication Number:
  US 20080100511A1
• Time in Patent Office: 923 Days
• Field of Search: 343/700.MS, 343/702
• US Class Current: 343/700.0MS
• CPC Class Codes: H01Q 9/0442 with particular tuning means

Abstract

A low profile antenna comprises a radiating element arranged over a ground plane. The radiating element has a plurality of radiating edges. Dielectric elements are coupled to the radiating edges.

Claims

1. A low profile antenna, comprising:

a ground plane;

a radiating element, the radiating element comprising a plurality of radiating edges and a ground facing side, the radiating element separated from the ground plane by a distance d, the distance d such that a volume exists between the radiating element and the ground plane;

a plurality of dielectric elements corresponding to the plurality of radiating edges, wherein the plurality of dielectric elements equals the plurality of radiating edges, where each of the plurality of dielectric elements is only coupled to a corresponding one of the plurality of radiating edges on the ground facing side and extending toward the ground plane; and

a power feed connected to the radiating element,

wherein a volume occupied by the dielectric elements is substantially less than the volume that exists between the radiating element and the ground plane.

2. The antenna of claim 1, wherein

the radiating element has a length L and a width W;

and

the at least one dielectric element has a length L₁ and a width W₁ less than L and W.

3. The antenna of claim 2, wherein L is not equal to W.

4. The antenna of claim 1, wherein the antenna operates at multiple frequencies.

5. The antenna of claim 4, wherein the radiating element comprises at least one slot.

6. The antenna of claim 1, wherein the dielectric elements are coupled to the radiating element using conductive tape.

7. The antenna of claim 1, further comprising an impedance matching network.

8. A low profile antenna, comprising:

a ground plane;

a patch radiating element, the patch radiating element comprising a plurality of radiating edges and a ground facing side, the radiating element having a first length and a first width separated from the ground plane by a distance d and defining a volume between the radiating element and the ground plane;

a plurality of dielectric elements corresponding to the plurality of radiating edges, wherein the plurality of dielectric elements equals the plurality of radiating edges, such that one dielectric element exists and is aligned with only one of the plurality of radiating edges and is coupled to only one of the ground plane or the aligned one of the plurality of radiating edges of the patch radiating element, the plurality of dielectric elements having a second length less than the first length and a second width less than the first width; and

a power feed connected to the radiating element,

wherein the plurality of dielectric elements occupy a space substantially less than the volume between the radiating elements and the ground plane.

9. The low profile antenna of claim 8, wherein the patch radiating element comprises a plurality of meanderline elements.

10. The low profile antenna of claim 8, wherein the patch radiating element comprises a plurality of slots.

11. The low profile antenna of claim 8, wherein the patch radiating element comprises a length L and a width W.

12. The low profile antenna of claim 8, wherein the plurality of dielectric elements comprise a length L₁ and a width W₁ less than the length L and the width W.

13. The low profile antenna of claim 8, wherein the length L is not equal to the width W.

14. The low profile antenna of claim 8, further comprising an impedance matching network.

15. The low profile antenna of claim 8, wherein the patch radiating element resonates at multiple frequencies.

16. A low profile antenna, comprising:

a ground plane;

a radiating element, the radiating element comprising a plurality of radiating edges and a ground facing side, the radiating element separated from the ground plane by a distance d, the radiating element having a first length and a first width;

a plurality of dielectric elements, wherein the plurality of dielectric elements equals the plurality of radiating edges, where each of the plurality of dielectric elements are coupled to only one of the plurality of radiating edges on the ground facing side and extending toward the ground plane, the plurality of dielectric elements having a second length less than the first length and a second width less than the first width; and

a power feed connected to the radiating element,

wherein the surface area of the radiating element is greater than the surface area of the plurality of dielectric elements.

17. The low profile antenna of claim 16 wherein the plurality of dielectric elements occupy a space significantly less than the volume defined by L×

W×

d.

18. The low profile antenna of claim 16 wherein the radiating element comprises at least one slot.

19. The low profile antenna of claim 16 wherein the power feed is directly connected to the radiating element.