Millimeter wave, wideband, wide scan phased array architecture for radiating circular polarization at high power levels
AssigneeGovernment of the United States as Represented by the Secretary of the Air Force
InventorsBoris Tomasic, Carl R. Pfeiffer, Thomas P. Steffen
Life of this patent
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Abstract
An active electronically scanned array (AESA) is disclosed. The AESA includes a linear-to-circular polarizer coupled to a radiating aperture and one or more transmit-receive modules coupled to radiating elements and a liquid cooling manifold having a plurality of distributed liquid cooling ducts disposed adjacent the one or more transmit-receive modules to provide cooling of the AESA during high-power operation.
Claims19
An active electronically scanned array, comprising:
- a linear-to-circular polarizer coupled to a radiating aperture;
- one or more transmit-receive modules coupled to radiating elements;
- and
- a plurality of distributed liquid cooling ducts disposed adjacent the one or more transmit-receive modules.
An active electronically scanned array, comprising:
- a linear-to-circular polarizer coupled to a radiating aperture;
- one or more transmit-receive modules coupled to the radiating elements;
- and
- one or more cooling manifolds coupled to the one or more transmit-receive modules and including a plurality of distributed liquid cooling ducts disposed in spaces between a plurality of adjacent printed circuit boards.
An active electronically scanned array, comprising:
- a linear-to-circular polarizer coupled to a radiating aperture, the linear to circular polarizer comprising:
- a plurality of cascaded waveplates having biaxial permittivity, each waveplate having a principal axis rotated at different angles relative to an adjacent waveplate about a z-axis of a 3-dimensional x, y, z coordinate system;
- and
- impedance matching layers disposed adjacent the cascaded waveplates;
- one or more transmit-receive modules coupled to the radiating elements;
- and
- one or more cooling manifolds coupled to the one or more transmit-receive modules and including a plurality of distributed liquid cooling ducts disposed in spaces between a plurality of adjacent printed circuit boards.
An active electronically scanned array, comprising:
- a linear-to-circular polarizer coupled to a radiating aperture, the linear to circular polarizer comprising:
- a plurality of cascaded anisotropic sheets, each sheet having a principal axis rotated at different angles relative to an adjacent sheet about a z-axis of a 3-dimensional x, y, z coordinate system;
- and
- impedance matching layers disposed adjacent the cascaded sheets;
- and
- one or more transmit-receive modules coupled to the radiating elements;
- and
- one or more cooling manifolds coupled to the one or more transmit-receive modules and including a plurality of distributed liquid cooling ducts disposed in spaces between a plurality of adjacent printed circuit boards.
Dependencies are inferred from the claim text.