Joseph F Faulkner

US Patent:

7728771, Jun 1, 2010

Filed:

Jul 3, 2007

Appl. No.:

11/773105

Inventors:

Michael J. Lee - Ellicott City MD, US
Eric V. Miller - Phoenix MD, US
Joseph A. Faulkner - Ellicott City MD, US
Cynthia W. Berry - Pasadena MD, US
Gene A. Digennaro - Dundalk MD, US
Kerron R. Duncan - Randallstown MD, US
Ronald G. Freitag - Catonsville MD, US
Tapan K. Gupta - Ellicott City MD, US
Vincent G. Karasack - Ellicott City MD, US
Dave M. Krafcsik - Crownsville MD, US
Brian T. McMonagle - Ellicott City MD, US
Robert B. Middleton - Laurel MD, US
Benjamin R. Myers - Columbia MD, US
Mike L. Salib - Millersville MD, US
John P. Vitamvas - Columbia MD, US
Thomas M. Walsh - Bowie MD, US
Eric D. Zirofsky - Washington DC, US
John W. Gipprich - Millersville MD, US

Assignee:

Northrop Grumman Systems Corporation - Los Angeles CA

International Classification:

H01Q 3/36

US Classification:

342368

Abstract:

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.

US Patent:

57450765, Apr 28, 1998

Filed:

Sep 5, 1996

Appl. No.:

8/708439

Inventors:

Thomas R. Turlington - Linthicum MD
Patrick G. Farrell - Baltimore MD
Gerald K. Kane - Stevensville MD
Gary L. Ferrell - Pasadena MD
Scott K. Suko - Elkridge MD
Joseph A. Faulkner - Ellicott City MD
Gregory K. Sinon - Dayton MD
Francis W. Hopwood - Severna Park MD
Andrew J. Piloto - Columbia MD

Assignee:

Northrop Grumman Corporation - Los Angeles CA

International Classification:

H01Q 324

US Classification:

342372

Abstract:

A T/R module including a multilevel, multichip microwave package having a plurality of gallium arsenide monolithic microwave integrated circuit chips (MMICs) implementing RF switching elements, a variable phase shifter, a plurality of RF amplifiers, and gain trim attenuators and which are located on a planar RF assembly. The module's architecture includes shared or common MMIC circuit elements during both transmit and receive operation modes thus reducing the number of MMICs required while at the same time preloading the supply voltage regulator-modulator which supplies DC power to all the MMIC circuits without degrading T/R module efficiency.

US Patent:

59400315, Aug 17, 1999

Filed:

Apr 7, 1998

Appl. No.:

9/056094

Inventors:

Thomas R. Turlington - Linthicum MD
Patrick G. Farrell - Baltimore MD
Gerald K. Kane - Stevensville MD
Gary L. Ferrell - Pasadena MD
Scott K. Suko - Elkridge MD
Joseph A. Faulkner - Ellicott City MD
Gregory K. Sinon - Dayton MD
Francis W. Hopwood - Severna Park MD
Andrew J. Piloto - Columbia MD

Assignee:

Northrop Grumman Corporation - Los Angeles CA

International Classification:

H01Q 324

US Classification:

342372

Abstract:

A T/R module including a multilevel, multichip microwave package having a plurality of gallium arsenide monolithic microwave integrated circuit chips (MMICs) implementing RF switching elements, a variable phase shifter, a plurality of RF amplifiers, and gain trim attenuators and which are located on a planar RF assembly. The module's architecture includes shared or common MMIC circuit elements during both transmit and receive operation modes thus reducing the number of MMICs required while at the same time preloading the supply voltage regulator-modulator which supplies DC power to all the MMIC circuits without degrading T/R module efficiency.

US Patent:

51363003, Aug 4, 1992

Filed:

Jun 13, 1991

Appl. No.:

7/713259

Inventors:

John Clarke - Baltimore MD
Joseph A. Faulkner - Ellicott City MD
Gregory K. Sinon - Dayton MD
Brian J. Misek - Pasadena MD
John E. Kositz - Glen Burnie MD

Assignee:

Westinghouse Electric Corp. - Pittsburgh PA

International Classification:

G01S 7282

US Classification:

342175

Abstract:

A solid state radar transmitter for use in airborne applications has a modular design which extends into the transmitter. The transmitter is formed of a plurality of power modules the number of which is selected based on the power required for a particular application. For example, two 75 to 100 watt modules may be used for weather radar, while 30 to 60 or more modules may be used for fire control in a military fighter. A radio frequency signal from a stabilized local oscillator is distributed by a splitter to the power modules and a combiner is used to combine the output from the power modules to produce the transmitter output signal. Each power module is formed of parallel connected power amplifiers, preferably formed by GaAs FETs and a power conditioning and control unit. The power conditioning and control unit produces a DC bias across the FETs as desired to produce a particular signal. The transmitter output signals which can be produced in this manner include rectangular, Gaussian on a pedestal and one amplifier at a time for testing purposes.