Granted Patent B2

US 7,602,347 · App. 11/423,256 · Granted Oct 13, 2009

Abstract

Claims (33)

1. A feed with a longitudinal axis, comprising:

a waveguide;

at least one corrugation(s) extending from an end of the waveguide;

the corrugation(s) coaxial with the longitudinal axis, forming an extension of the waveguide;

the corrugation(s) having an end face angle less than 90 degrees with respect to the longitudinal axis;

the waveguide and the at least one corrugation(s) extending from the end of the waveguide forming a first side feed formed as a unitary element also including a central feed; the central feed spaced away from the first side feed and having a central feed longitudinal axis that is parallel to the longitudinal axis of the side feed.

2. The feed of claim 1 , wherein the at least one corrugation is the open end of the waveguide.

3. The feed of claim 1 , wherein the at least one corrugation is at least one step of increasing diameter greater than the end of the waveguide.

4. The feed of claim 1 , further including a pair of adjacent feeds formed on opposing sides of the central feed.

5. The feed of claim 4 , wherein the central feed has at least one corrugation(s) extending from an end of the central feed;

the corrugation(s) coaxial with the longitudinal axis, forming an extension of the waveguide;

the corrugations cut away from an open end of the adjacent feeds.

6. The feed of claim 1 , further including a second side feed positioned between the first side feed and the central feed.

7. The feed of claim 1 , wherein the first side feed and the central feed are formed with a vertical offset along a horizontal axis.

8. The feed of claim 1 , wherein a polarizing septum is positioned within each of the first side feed and the central feed; the polarizing septums having a vertical offset with respect to each other.

9. The feed of claim 1 , wherein the end face angle is less than 90 and greater than 60 degrees.

10. The side feed of claim 1 , wherein the extension is removable from the end of the waveguide.

11. A feed assembly, comprising:

a first side feed having a waveguide with an open end;

at least one corrugation(s) extending from the open end of the waveguide;

the corrugation(s) coaxial with a first side feed longitudinal axis, forming an extension of the waveguide with an increasing diameter;

the corrugation(s) having an end face angle less than 90 degrees with respect to the feed waveguide longitudinal axis; and

a central feed spaced away from the first side feed and having a central feed waveguide longitudinal axis that is parallel to the side feed longitudinal axis;

the first side feed and the central feed extending from a base plate, the first side feed and the central feed having a vertical offset along a horizontal axis.

12. A method for manufacturing a feed, comprising the steps of:

forming a waveguide having at least one corrugation(s) extending from an end of the waveguide;

the corrugation(s) coaxial with a longitudinal axis of the waveguide, forming an extension of the waveguide;

the corrugation(s) having an end face angle less than 90 degrees with respect to the longitudinal axis;

the waveguide and the at least one corrugation(s) extending from the end of the waveguide forming a first side feed formed as a unitary element also including a central feed; the central feed spaced away from the first side feed and having a central feed longitudinal axis that is parallel to the longitudinal axis of the side feed.

13. The method of claim 12 , wherein the first side feed and the central feed have a vertical offset along a horizontal axis.

14. The method of claim 12 , wherein the waveguide is formed via die casting.

15. The method of claim 12 , wherein the waveguide is formed via injection molding.

16. The method of claim 15 , further including the step of coating the waveguide with a conductive material.

Assignments (10)