APPARATUS AND METHOD FOR ANTENNA RF FEED

• US 20080117114A1
• Filed: 10/31/2007
• Published: 05/22/2008
• Est. Priority Date: 05/24/2006
• Status: Active Grant

• Current Assignee: Dedi David/D Haziza
• Original Assignee: Wavebender, Inc.
• Inventors: Haziza, Dedi David
• Granted Patent: US 7,656,359 B2
• Time in Patent Office: Days
• US Class Current: 343/786
• CPC Class Codes: H01Q 13/00 Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave

Abstract

An RF feed is provided which is structured as a curved reflector coupled to a sidewall of a waveguide cavity. A radiation source is situated facing the curved reflector. The RF feed may be coupled to a waveguide cavity having radiation elements coupled to top surface thereof, to thereby feed an antenna array. When an antenna array is used, several curved reflector RF feeds may be used, operating in the same or different frequencies.

Claims

1. An RF feed comprising:

a waveguide;

a curved reflector coupled to an opening at a side of the waveguide; and

a radiation source provided in the space between the opening at the side of the waveguide and the curved reflector.

2. The RF feed of claim 1, wherein the curved reflector is a three-dimensionally shaped surface.

3. The RF feed of claim 2, wherein the curved reflector is cylindrical.

4. The RF feed of claim 2, wherein the curved reflector is parabolic.

5. The RF feed of claim 2, wherein the curved reflector is toroidal.

6. The RF feed of claim 1, further comprising a counter-reflector situated opposite the radiation source and facing the curved reflector.

7. The RF feed of claim 1, wherein the radiation source comprises a metallic pin.

8. The RF feed of claim 1 wherein the radiation source comprises a waveguide horn opening.

9. The RF feed of claim 1 wherein the radiation source comprises a microstrip patch.

10. The RF feed of claim 1, wherein the waveguide comprises a top surface, a bottom surface and a sidewall, and further comprising an extension coupled to the opening in the sidewall, and wherein the curved reflector is provided under the bottom surface and is coupled to the extension.

11. The RF feed of claim 1, wherein the radiation source comprises a plurality of metallic pins arranged linearly.

12. The RF feed of claim 1, wherein the radiation source comprises a plurality of metallic pins arranged on a curve.

13. The RF feed of claim 1, wherein the radiation source comprises a plurality of waveguide horns.

14. The RF feed of claim 1, wherein the radiation source comprises a plurality of microstrip patches.

15. The RF feed of claim 1, wherein the curved reflector is shaped according to a function designed to reflect radiation received from the radiation source to thereby produce a linear wave front at the opening at the side of the waveguide.

16. The RF feed of claim 1, further comprising:

a second curved reflector coupled to a second opening at a second side of the waveguide; and

a second radiation source provided in the space between the second opening at the second side of the waveguide and the second curved reflector.

17. The RF feed of claim 16, wherein the second curved reflector is shaped according to a function designed to reflect radiation received from the second radiation source to thereby produce a second linear wave front at the second opening at the second side of the waveguide

18. The RF feed of claim 17, wherein the linear opening and the second opening are at right angles to each other.

19. The RF feed of claim 1, wherein the radiation source comprises a movable metallic pin.

20. The RF feed of claim 16, wherein the curved reflector is smaller than the second curved reflector.