James Gallivan

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:

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:

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.

US Patent:

8077087, Dec 13, 2011

Filed:

Jun 9, 2008

Appl. No.:

12/135352

Inventors:

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

Assignee:

Raytheon Company - Waltham MA

International Classification:

H01Q 3/00
H01Q 21/29

US Classification:

342373, 342354, 342368, 343893

Abstract:

Methods and apparatus according to various aspects of the present invention operate in conjunction with a phased array system. The phased array system may include an array structural frame defining an array of module-receiving mounting locations. The phased array system may further include multiple array modules. Each array module may be adapted to be mounted in one of the mounting locations, and may include an antenna and a power source. The power source may supply power to the array module during an array transmit operation.

US Patent:

8188905, May 29, 2012

Filed:

May 29, 2009

Appl. No.:

12/474483

Inventors:

James R. Gallivan - Pomona CA, US

Assignee:

Raytheon Company - Waltham MA

International Classification:

G01S 13/66
G01S 13/86
G01S 13/00

US Classification:

342 13, 315 32, 315 3951, 89 111, 342 52, 342 53, 342 54, 342 61, 342 67, 342 73, 342 74, 342 82

Abstract:

Embodiments of a target tracking system and method with jitter reduction suitable for directed energy systems are generally described herein. In some embodiments, the directed energy system includes a target tracking system to track one or more track points on a moving target, and a beam transmission unit to maintain a directed energy beam on a selected one of the track points in response to tracking control signals provided by the target tracking system. The track points may be smaller than a spot size of the directed energy beam maintained on the target.

US Patent:

6130588, Oct 10, 2000

Filed:

Nov 12, 1998

Appl. No.:

9/191066

Inventors:

James R. Gallivan - Pomona CA
Kenneth W. Brown - Yacaipa CA
David R. Sar - Corona CA

Assignee:

Raytheon Company - Lexington MA

International Classification:

H03H 738
H03H 742

US Classification:

333 25

Abstract:

A high-power wideband transformer (40). The transformer (40) includes a first input terminal (42) connected in parallel to one or more conductor paths (50 and 52) and to a first output conductor (48). A second input terminal (44) is connected in parallel to the one or more conductor paths (50 and 52) and to a second output conductor (54). An inductive device (56, 60, 64, 58, 62, and 66) effects electrical coupling between the one or more conductor paths (50 and 52) and the first output conductor (48) and between the one or more conductor paths (50 and 52) and the second output conductor (54) sufficient to implement a desired transformer ratio from input of the transformer (40) to output of the transformer (40) via approximately colinear wires (56, 60, and 64). In a first illustrative embodiment, the co-linear wires (56, 60, and 64) are parallel wires placed sufficiently close to effect the electrical coupling. The transformer 40 effects a nine-to-one transformer ratio.