James R Gallivan

US Patent:

6765535, Jul 20, 2004

Filed:

May 20, 2002

Appl. No.:

10/153140

Inventors:

Kenneth W. Brown - Yucaipa CA
James R. Gallivan - Pomona CA

Assignee:

Raytheon Company - Waltham MA

International Classification:

H01Q 138

US Classification:

343700MS, 343754

Abstract:

A monolithic semiconductor power device. The device is designed to produce high energy density and high power level RF/Millimeter wave radiation using the quasi-optical spatial power of an array ( ) of small amplifiers ( ) on a solid state wafer ( ). Each cell ( ) of the array ( ) contains a reflection amplifier ( ) that receives radiation and retransmits the signal back into the approximate same direction from which it was received. The radiation exiting from the array ( ) is physically like a reflection that has been modified by the individual amplifiers characteristics. The exiting amplified radiation leaves the array ( ) as a coherent wave front ( ). The individual amplifier elements are fabricated on a monolithic solid state wafer ( ). Rather than being diced into individual amplifiers, the elements are electrically connected together with proper biases and ground levels on the actual solid state wafer.

US Patent:

6982678, Jan 3, 2006

Filed:

Apr 2, 2004

Appl. No.:

10/817400

Inventors:

Thomas L. Obert - Pomona CA, US
Kenneth W. Brown - Yucaipa CA, US
Alan A. Rattray - Alta Loma CA, US
John Gerstenberg - Lake Elsinore CA, US
James R. Gallivan - Pomona CA, US

Assignee:

Raytheon Company - Waltham MA

International Classification:

H01Q 13/00

US Classification:

343775, 343882

Abstract:

An apparatus includes a microwave source that produces a microwave feed beam, and a first pair of microwave sensors that each intercept and receive a portion of the microwave feed beam. The two microwave sensors are spaced apart from each other along a first-pair axis. A first phase-comparison device has as it inputs the output signals of the two microwave sensors, and as an output a first phase comparison of the first-sensor output signal and the second-sensor output signal. A first geometrical calculator has as an input the first phase comparison and as an output a geometrical relationship of the first-pair axis to an other feature. This geometrical relationship output may be used to generate a control signal that is used to alter the geometrical relationship. There may be additional microwave sensors operating in a similar manner but spaced to provide information for other geometrical axes or allow improvements in geometrical measurements.

US Patent:

7019640, Mar 28, 2006

Filed:

May 19, 2003

Appl. No.:

10/440944

Inventors:

David J. Canich - Upland CA, US
David D. Crouch - Corona CA, US
James R. Gallivan - Pomona CA, US
Robert E. Karlson - Mission Viego CA, US
Keith G. Kato - Alta Loma CA, US
David R. Sar - Corona CA, US
Philip D. Starbuck - Redlands CA, US

Assignee:

Raytheon Company - Waltham MA

International Classification:

G08B 1/00

US Classification:

340531, 34053913, 34053926, 3405681, 3406861, 34082549, 34082569, 34082572

Abstract:

A system and method for monitoring a cargo container. The novel system () includes a sensor module () mounted in each target area () and a central monitoring system (). Each sensor module () includes one or more sensors () and a transceiver () for transmitting data from the sensors to the central monitoring system (). The central monitoring system () includes a transceiver () for receiving the data from all sensor modules () and a local master processor () for processing and analyzing the data. In the preferred embodiment, each transceiver () is capable of receiving and retransmitting signals of other sensor modules to relay signals of a particular sensor module () in a daisy chain fashion to and from the central monitoring system ().

US Patent:

7034751, Apr 25, 2006

Filed:

Dec 12, 2003

Appl. No.:

10/734445

Inventors:

Kenneth W. Brown - Yucaipa AZ, US
James R. Gallivan - Pomona CA, US

Assignee:

Raytheon Company - Waltham MA

International Classification:

H01Q 1/38

US Classification:

343700MS, 343754

Abstract:

An amplifier including a monolithic semiconductor substrate and an array disposed on said substrate for coherently receiving and retransmitting electromagnetic energy. The array is implemented with a plurality of cells. Each of the cells includes a dual polarization antenna structure for receiving electromagnetic energy and an amplifier connected thereto. The amplifier may include an ortho-mode feed and a reflective amplifier array adapted to be illuminated by the feed with an input wavefront with a first polarization and to return thereto an amplified wavefront with a second polarization orthogonal to the first wavefront. First and second shaped mirrors may be incorporated for illuminating the array with a planar wavefront and converting the reflected planar wavefront to a spherical wavefront.

US Patent:

7126477, Oct 24, 2006

Filed:

Jan 15, 2004

Appl. No.:

10/758334

Inventors:

James E. Gallivan - Pomona CA, US
Kenneth W. Brown - Yucaipa CA, US
Philip D. Starbuck - Redlands CA, US
Andrew K. Brown - Victorville CA, US

Assignee:

Raytheon Company - Waltham MA

International Classification:

G08B 13/18

US Classification:

340567, 340541, 3405453

Abstract:

An area-protection system uses an active-array antenna to generate a high-power millimeter-wave wavefront to deter an intruder within a protected area. One or more reflectors may be positioned within the protected area to help retain energy of the wavefront within the area. The area-protection system may include an intrusion-detection subsystem to detect presence of the intruder within the protected area and to generate a detection signal. The active-array antenna may generate the high-power millimeter-wave wavefront in response to the detection signal. In some embodiments, the intrusion-detection subsystem may detect the presence of a tag worn by the intruder, and may instruct the array antenna to refrain from generating the wavefront when tag is authenticated. In some embodiments, an illuminator may be used detect intruder movement based on return signals. In some embodiments, the array antenna includes semiconductor wafers arranged together on a substantially flat surface.

US Patent:

7151494, Dec 19, 2006

Filed:

May 4, 2005

Appl. No.:

11/122372

Inventors:

Kenneth W. Brown - Rancho Cucamonga CA, US
James R. Gallivan - Pomona CA, US

Assignee:

Raytheon Company - Waltham MA

International Classification:

H01Q 1/38

US Classification:

343700MS, 343786, 343754, 333 21 A

Abstract:

An oscillator. In the illustrative embodiment, the oscillator includes an ortho-mode feed; a reflective amplifier array adapted to be illuminated by the feed with an input wavefront with a first polarization and to return thereto an amplified wavefront with a second polarization orthogonal to the first wavefront; and a partially reflective plate disposed between the feed and the amplifier. The inventive oscillator provides a Fabry-Perot cavity between the feed and the plate. In the illustrative embodiment, the plate is a polarized plate. The plate may have surfaces with dissimilar polarizations and/or curvatures. The amplifier may be phase locked by an ortho-mode converter or other arrangement.

US Patent:

7378914, May 27, 2008

Filed:

Jan 31, 2006

Appl. No.:

11/343632

Inventors:

James R. Gallivan - Pomona CA, US
Kenneth W. Brown - Yucaipa CA, US

Assignee:

Raytheon Company - Waltham MA

International Classification:

H04B 7/10

US Classification:

331 79, 331 82, 343754, 343755, 333 21 A, 342361

Abstract:

Embodiments of High-Power Millimeter-Wave Oscillators are generally described herein. Other embodiments may be described and claimed. In some embodiments, the oscillator includes a polarized partial reflector to at least partially reflect back signals to a reflection array amplifier to help induce oscillation by individual sub-array amplifier elements of the reflection array amplifier. In some other embodiments, the oscillator includes a phase-graded polarization-sensitive reflection plate to at least partially reflect back signals to the reflection array amplifier to help induce an oscillation by the sub-array amplifier elements. In some embodiments, the oscillator includes a reflector and a phase-graded polarized reflection-transmission plate to at least partially pass through signals to the reflector for reflection back to the reflection array amplifier to help induce an oscillation by the sub-array amplifier elements.

US Patent:

7498549, Mar 3, 2009

Filed:

Oct 24, 2003

Appl. No.:

10/693125

Inventors:

James R. Gallivan - Pomona CA, US
Kenneth W. Brown - Yucaipa CA, US

Assignee:

Raytheon Company - Waltham MA

International Classification:

H05B 6/74

US Classification:

219748, 219745

Abstract:

A surface-heating system heats a surface with a high-power wavefront at a millimeter-wave frequency. The high-power wavefront may be a collimated wavefront or a converging or diverging wavefront. In some embodiments, the system includes a frequency generator to generate a lower-power millimeter-wave frequency signal, and an active-array antenna system to amplify the millimeter-wave frequency and generate the high-power wavefront in a direction of a surface for heating the surface. In other embodiments, a frequency generator and power amplifier may generate a high-power power millimeter-wave frequency signal, and a passive-array antenna system may provide the high-power wavefront in a direction of the surface. In some embodiments, a thermal-sensing subsystem may measure the surface temperature and generate a control signal to maintain the surface temperature within a predetermined temperature range.