Patent ID: 8264405

Claim:
A receive electronically steered array aperture, comprising: an active array element comprising: a co-phasal, dual-linear radiator having a first radiator element with a first linear polarization and a second radiator element with a second linear polarization that is orthogonal to the first linear polarization; a first low noise amplifier (LNA) having an input and an output, wherein the input of said first LNA is coupled to receive a signal from said first radiator element; a second LNA having an input and an output, wherein the input of the second LNA is coupled to receive a signal from the second radiator element; a 90 degree phase-shifter having an input and an output, the input of the 90 degree phase-shifter being coupled to receive a signal from the output of the second LNA; a first 180 degree hybrid device having first and second input ports, a sum port, and a delta port, the first input port of the first 180 degree hybrid device being coupled to receive a signal from the output of the first LNA and the second input port of the first 180 degree hybrid being coupled to receive a signal from the output of the 90 degree phase-shifter; a second 180 degree hybrid device having first and second input ports, a sum port, and a delta port, the first input port of the second 180 degree hybrid device being coupled to receive a signal from the sum port of the first 180 degree hybrid device and the second input port of the second 180 degree hybrid device being coupled to receive a signal from the delta port of the first 180 degree hybrid device; and a variable phase shifter to shift a phase of a signal received from the sum port of the second 180 degree hybrid device.