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US 9,070,964 B1Granted
Methods and apparatus for volumetric coverage with image beam super-elements
AssigneeRaytheon Company
InventorsJack J. Schuss, Thomas V. Sikina, Kaichiang Chang, Jeffrey C. Upton
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Abstract
Methods and apparatus for a super-element assembly for a phased array radar aperture, the super-element assembly having a first port and a second port to receive a first signal at the first port to generate a main beam, and receive a second signal at the second port to generate an image beam for generating scan volume coverage using the main and image beams.
Claims22
A method, comprising:
- employing a super-element assembly for a phased array radar aperture, the super-element assembly having a first port and a second port and a longitudinal axis, wherein the first and second ports are located at opposing ends of the super-element assembly;
- employing a first signal at the first port to generate a main beam at a first angle plus theta (+θ);
- and
- employing a second signal at the second port to generate an image beam at a second angle minus theta (−θ), wherein the first and second angles are oriented with respect to a surface normal of the super-element assembly longitudinal axis.
1 more element
A system, comprising:
- a super-element assembly for a phased array radar aperture, comprising:
- a first port to receive a first signal to generate a main beam at angle theta;
- and
- a second port to receive a second signal to generate at minus theta an image beam for generating scan volume coverage from the main beam and the image beam wherein the first and second ports are located at opposing ends of the super-element assembly, and wherein theta is oriented with respect to a surface normal and a longitudinal axis of the super-element assembly.
1 more element
A radar system, comprising:
- an aperture including first, second and third faces;
- the first face comprising:
- a super-element assembly for a phased array radar aperture, comprising:
- a first port to receive a first signal to generate a main beam at angle theta;
- and
- a second port to receive a second signal to generate at angle minus theta an image beam for generating scan volume coverage from the main beam and the image beam, wherein theta is oriented with respect to a surface normal of the super-element assembly.
3 more elements
A method comprising:
- employing a set of substantially identical super-element assemblies for a phased array radar aperture, each of the super-element assemblies having a first port and a second port;
- employing respective first signals at the respective first ports of the super-element assemblies to generate a main beam;
- and
- employing respective second signals at the respective second ports of the super-element assemblies to generate an image beam.
1 more element
Dependencies are inferred from the claim text.