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US 5,208,602 AGranted
Cavity backed dipole antenna
AssigneeRaytheon Company
InventorsGeorge J. Monser, Steven J. Ball
Life of this patent
Estimating the term…
Abstract
A small volume, broad beam antenna is disclosed. The antenna has four cavity backed elements. Each of the elements is triangular shaped and is mounted such that the narrow portions of the triangular elements are over the center of the cavity.
Claims15
An antenna comprising:
- a) a base having a cavity formed therein;
- b) a dielectric sheet having a first side and a second side mounted to the base over the cavity with the first side facing into the cavity and a second side out of the cavity;
- and
- c) a dipole comprising a pair of conductive elements mounted to the dielectric sheet, each such element comprising a sheet of conductive material mounted outside the cavity substantially orthogonal to the dielectric sheet, each of said conductive sheets having a first end over a first portion of the cavity and a second end over a second portion of the cavity, and a first edge joining the first and second ends, wherein the first edge is tapered with respect to the dielectric sheet, wherein radio frequency energy passes between said dipole and said cavity and is reflected by portions of walls of said cavity, said walls being disposed at an angle so that the depth of the cavity is greater in the center than at the edges.
1 more element
An antenna comprising:
- a) a base having a cavity formed therein;
- b) a dielectric sheet having a first side and a second side mounted to the base over the cavity with the first side facing into the cavity and a second side out of the cavity;
- c) a dipole comprising a pair of conductive elements mounted to the dielectric sheet, each such element comprising a sheet of conductive material mounted outside the cavity substantially orthogonal to the dielectric sheet, each of said conductive sheets having a first end over a first portion of the cavity, and a second end over a second portion of the cavity, and a first edge joining the first and second ends, wherein the first edge is tapered with respect to the dielectric sheet, wherein radio frequency energy passes between said dipole and said cavity;
- and
- wherein the cavity is deepest below the portions of the conductive elements where the tapered edges are closest to the dielectric sheet.
2 more elements
An antenna comprising:
- a) a dielectric sheet;
- b) a pair of conductive elements mounted to the dielectric sheet, each such element comprising a sheet of conductive material mounted substantially orthogonal to the dielectric sheet, each of said conductive sheets having a first end and a second end, and a first edge joining the first and seconds ends, wherein the first edge is tapered with respect to the dielectric sheet;
- c) a base having a cavity formed therein, said cavity having a floor and an opening and wherein the dielectric sheet extends across the opening of the cavity;
- and
- d) at least one strip of absorbing material mounted to the floor of the cavity.
2 more elements
An antenna comprising:
- a) a base having a cavity formed therein, said cavity having a floor and an opening and having center portions and end portions, the cavity being deeper at the center portions than the end portions;
- b) a dielectric sheet mounted across the opening of the cavity;
- and
- c) four triangular conducting elements orthogonally mounted to the sheet outside of said cavity, said triangular conducting elements being mounted with a first edge adjacent to the dielectric sheet and a second edge terminating above the center portions of the cavity, wherein the distance between said first and second edges increases as the distance from the center portions of the cavity increases.
1 more element
Dependencies are inferred from the claim text.