Patrick M Fitzgerald

US Patent:

6421021, Jul 16, 2002

Filed:

Apr 17, 2001

Appl. No.:

09/836896

Inventors:

Frederick C. Rupp - Redondo Beach CA
Clifton Quan - Arcadia CA
Patrick J. Fitzgerald - Northridge CA
Steven G. Buczek - Brea CA

Assignee:

Raytheon Company - Lexington MA

International Classification:

H01Q 1906

US Classification:

343753, 343770, 343772

Abstract:

A space-fed active array lens antenna system has an active array lens with a first array of radiating elements defining a front antenna aperture which transmits and receives RF energy from free space, a second array of radiating elements defining a rear antenna aperture which transmits and receives RF energy from a feed aperture, and an array of transmit/receive (T/R) modules sandwiched between the front aperture and rear aperture. The T/R modules include a phase control circuit and an amplitude control circuit which provide phase and amplitude control for RF signals passing through the modules. The feed aperture includes a wide band CTS aperture which produces a plane wave in the near field.

US Patent:

6430805, Aug 13, 2002

Filed:

Nov 6, 1998

Appl. No.:

09/187673

Inventors:

Alec Ekmekji - Los Angeles CA
Douglas O. Klebe - Redondo Beach CA
William W. Milroy - Torrance CA
Patrick J. Fitzgerald - Northridge CA
Gerald A. Cox - Playa Del Rey CA
Kenneth Nash - Moorpark CA

Assignee:

Raytheon Company - Lexington MA

International Classification:

H01P 1100

US Classification:

29600, 29DIG 47, 343772, 343776, 343853

Abstract:

Methods of fabricating air-filed true-time-delay, continuous transverse stub array antenna. A plurality of extruded sections that are physically independent of one another are fabricated. The plurality of extruded sections are arranged in a predefined pattern defining the structure of the array antenna. Adjacent surfaces of the extruded sections form waveguides of the array antenna. The plurality of extruded sections are joined together at their respective ends to form the array antenna. The plurality of extruded sections may be joined using a plurality of end plates. The plurality of extruded sections and end plates may comprise metal or plastic. If the extruded sections are plastic, they are metallized using a process such as vacuum deposition, electroless plating, or lamination during the extrusion process. The end plates are sealed to the extruded sections to form the array antenna structure.

US Patent:

20050249049, Nov 10, 2005

Filed:

Mar 1, 2005

Appl. No.:

11/070682

Inventors:

Keith Jarrett - Huntington Beach CA, US
Patrick Fitzgerald - Redmond WA, US

International Classification:

G04C023/00

US Classification:

368250000

Abstract:

A personal security device is disclosed that permits a person in distress to alert people adjacent the person that a problem has occurred. The device may include an alarm circuit that may be activated by the person in distress of when the device is removed from the person in distress. The alarm circuit may be an audible alarm (80-125 decibels) circuit, a visual alarm circuit, an odor alarm, an electronic signal generation circuit or may generate a tracking signal.