Other

Northrop Grumman Systems Corporation

Paratek Microwave Incorporated

Paratex Microwave Inc.

Vincent G Karasack

Jaynesh Patel

Ronald G Freitag

John W Gipprich

Tapan K Gupta

Cynthia W Berry

Mike L Salib

Cornelis Frederick Du Toit

Joseph A Faulkner

Herbert Jefferson Henderson

Brian T McMonagle

Michael J Lee

Benjamin R Myers

Cornelius Du Toit

Gene A Digennaro

Eric D Zirofsky

Eric V Miller

Harry V Guy, Iii

Dave M Krafcsik

Robert B Middleton

Cornelis Fredrick Du Toit

John P Vitamvas

Kerron R Duncan

Thomas M Walsh

A multi-channel, dual-band, radio frequency (RF) transmit/receive (T/R) module, for an active electronically scanned array, is provided. The module includes a compact, RF manifold connector and at least four T/R channels. Each of the T/R channels includes a notch radiator, a diplexer coupled to the notch radiator, a power amplifier, including at least one dual-band gain stage, coupled to the notch radiator, a low noise amplifier, including at least one lower-band gain stage and at least one upper-band gain stage, coupled to the diplexer, and a T/R cell, including a phase shifter, a signal attenuator and at least one dual-band gain stage, coupled to the power amplifier, the low noise amplifier and the manifold connector.

Dual band quadpack transmit/receive module

An electronic scanning antenna system configured for beam scanning operation includes a plurality of antenna modules, each respective antenna module including: (a) a plurality of antenna elements arranged in a plurality of element sets, the plurality of element sets being arranged in a plurality of columns; (b) a plurality of beam forming network devices coupled with the plurality of antenna elements, each respective beam forming network device including at least one tunable dielectric phase shifter unit; and (c) at least one control unit coupled with the plurality of beam forming network devices, each control unit controlling the plurality of beam forming network devices to configure signals to operate the plurality of antenna elements to effect the beam scanning operation.

Dynamic multi-beam antenna using dielectrically tunable phase shifters

A method for calibrating a phased array antenna and the calibrated phased array antenna are described herein. In the preferred embodiment of the present invention, the method for calibrating a phased array antenna containing a plurality of electronically tunable phase shifters each of which is coupled to a column of radiating elements includes the steps of: (a) characterizing each of the electronically tunable phase shifters; (b) calculating phase offsets for each column of radiating elements using a nearfield antenna range and the characterized data for each of the electronically tunable phase shifters; and (c) using the calculated phase offsets in a calibration table to adjust the tuning voltage of each of the electronically tunable phase shifters to cause the columns of radiating elements to yield a uniform beam.

Nearfield calibration method used for phased array antennas containing tunable phase shifters

A method for calibrating a phased array antenna and the calibrated phased array antenna are described herein. In the preferred embodiment of the present invention, the method for calibrating a phased array antenna containing a plurality of electronically tunable phase shifters each of which is coupled to a column of radiating elements includes the steps of: (a) characterizing, without having any prior phase shift versus tuning voltage data, each of the electronically tunable phase shifters; (b) calculating phase offsets for each column of radiating elements using a farfield antenna range and the characterized data for each of the electronically tunable phase shifters; and (c) using the calculated phase offsets in a calibration table to adjust the tuning voltage of each of the electronically tunable phase shifters to cause the columns of radiating elements to yield a uniform beam.

Farfield calibration method used for phased array antennas containing tunable phase shifters

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Ellicott City, MD, United States of America

Vincent G Karasack