Polyhedral antenna and associated methods

• US 7,808,441 B2
• Filed: 08/30/2007
• Issued: 10/05/2010
• Est. Priority Date: 08/30/2007
• Status: Active Grant

• Current Assignee: Harris Corporation (L3Harris Technologies, Inc.)
• Original Assignee: Harris Corporation (L3Harris Technologies, Inc.)
• Inventors: Parsche, Francis Eugene, Tebbe, Dennis Lee
• Primary Examiner(s): Nguyen; Hoang V
• Application Number:
  US11/847,479
• Publication Number:
  US 20100066627A1
• Time in Patent Office: 1,132 Days
• Field of Search: 343/773, 343/807, 343/808, 343/866, 343/867
• US Class Current: 343/807
• CPC Class Codes: H01Q 7/00 Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
• CPC Class Codes: Y10T 29/49016 Antenna or wave energy "plumbing" making

Abstract

The antenna includes an electrically conductive antenna body having a polyhedral shape with opposing first and second ends and a medial portion therebetween. The medial portion of the electrically conductive antenna body is wider than the opposing first and second ends thereof, and the electrically conductive antenna body has a slot therein extending from at least adjacent the first end to at least adjacent the second end. The polyhedral antenna has an omnidirectional pattern, is horizontally polarized and broad in bandwidth above a lower cutoff frequency.

Claims

1. An antenna comprising:

an electrically conductive antenna body having a polyhedral shape with opposing first and second ends and a medial portion therebetween;

the medial portion of said electrically conductive antenna body being wider than the opposing first and second ends thereof; and

the electrically conductive antenna body having a slot therein extending from at least adjacent the first end to at least adjacent the second end.

2. The antenna according to claim 1 wherein the electrically conductive antenna body comprises a plurality of electrically conductive planes arranged in the polyhedral shape;

and wherein the slot is defined between opposing edges of adjacent electrically conductive planes.

3. The antenna according to claim 1 further comprising antenna feed points at the medial portion of the polyhedral antenna body adjacent the slot.

4. The antenna according to claim 1 wherein the polyhedral antenna body comprises first and second polyhedral body portions connected together at the medial portion of the polyhedral antenna body.

5. The antenna according to claim 4 wherein the first polyhedral body portion comprises a plurality of triangularly shaped electrically conductive planes.

6. The antenna according to claim 4 wherein each of the first and second polyhedral body portions comprises a plurality of triangularly shaped electrically conductive planes.

7. The antenna according to claim 6 wherein each of the triangularly shaped electrically conductive planes comprises a continuous conductive layer.

8. The antenna according to claim 6 wherein each of the triangularly shaped electrically conductive planes comprises a dielectric substrate and an electrically conductive trace thereon.

9. The antenna according to claim 1 wherein the electrically conductive antenna body comprises a hollow polyhedral antenna body.

10. The antenna according to claim 1 further comprising a dielectric material in the slot of the polyhedral antenna body.

11. A omnidirectional horizontally polarized antenna comprising:

an electrically conductive antenna body having a polyhedral shape and including first and second polyhedral body portions each having an apex and a base opposite the apex, the bases being connected together to define a medial portion of the antenna body;

the antenna body having a dielectric slot extending from the apex of the first polyhedral body portion to the apex of the second polyhedral body portion; and

antenna feed points at the medial portion of the polyhedral antenna body adjacent the dielectric slot.

12. The antenna according to claim 11 wherein each of the polyhedral body portions comprises a plurality of electrically conductive planes.

13. The antenna according to claim 12 wherein each of the electrically conductive planes comprises a continuous conductive layer.

14. The antenna according to claim 11 wherein the electrically conductive antenna body comprises a hollow antenna body.

15. A method of making an antenna comprising:

forming an electrically conductive antenna body having a polyhedral shape with opposing first and second ends and a medial portion therebetween;

the medial portion of said electrically conductive antenna body being wider than the opposing first and second ends thereof; and

forming at least one slot extending from at least adjacent the first end to at least adjacent the second end of the electrically conductive antenna body.

16. The method according to claim 15 wherein forming the electrically conductive antenna body comprises arranging a plurality of electrically conductive planes in the polyhedral shape;

and wherein forming the at least one slot comprises defining the slot between opposing edges of adjacent electrically conductive planes.

17. The method according to claim 15 wherein forming the electrically conductive antenna body includes forming first and second polyhedral body portions each having an apex and a base opposite the apex, the bases being connected together to define the medial portion of the electrically conductive antenna body;

and wherein forming the at least one dielectric slot comprises extending the slot from the apex of the first polyhedral body portion to the apex of the second body portion; and

further comprising defining feed points adjacent the slot at the medial portion of the polyhedral antenna body.

18. The method according to claim 17 wherein forming the polyhedral body portions comprises forming each of the first and second polyhedral body portions as a continuous conductive layer.

19. The method according to claim 17 wherein forming the polyhedral body portions comprises forming each of the first and second polyhedral body portions as a dielectric substrate and an electrically conductive trace thereon.