Raytheon

About: Raytheon is a company organization based out in Waltham, Massachusetts, United States. It is known for research contribution in the topics: Signal & Antenna (radio). The organization has 15290 authors who have published 18973 publications receiving 300052 citations.

System and method for reading license plates

Abstract: A method for reading a license plate disposed on a vehicle includes determining whether a license plate image is required, automatically processing the license plate image in response to determining that the license plate image is required, providing at least one verified image, and determining whether to manually read the license plate image by matching the license plate image with the at least one verified image.

Advanced maintenance system for aircraft and military weapons

Abstract: An equipment maintenance system (10) comprises a central data storage warehouse (16) for electronically storing technical information and for providing on-line technical assistance for repairing the equipment. A data transceiver (12) transmits data to and receives data from the central data storage warehouse (16). A communications link (22, 26, 28, 30) between the central data storage warehouse (16) and the wireless data transceiver (12) enables accessing of the technical information from the central data storage warehouse (16) by the data transceiver (12). The test means identifies failed system components and minimizes occurrences of false BIT flags, unnecessary system maintenance and removal of operational system components.

Quarter-wave film for brightness enhancement of holographic thin taillamp

Abstract: A holographic thin rear exterior lamp for a vehicle including a light pipe (11) having first and second opposing surfaces (11a, 11b), a rear exterior lamp hologram (13, 113) attached to one of the first and second surfaces of the light pipe, a polarization rotating retarder film (16, 116) attached to one of the first and second opposing surfaces oppositely from the rear exterior lamp hologram, a light source (17, 19) for providing a substantially collimated beam, a transmission hologram (15) disposed on one of the first and second surfaces of the light pipe for coupling the substantially collimated beam into the light pipe such that a portion of the substantially collimated light propagates by total internal reflection within the light pipe, the rear exterior lamp hologram and the polarization rotating retarder film The polarization rotating retarder film is configured to impart a substantially halfwave retardance to internally reflected light that passes twice therethrough

Capacitively Coupled Traveling-Wave Power Amplifier

Abstract: A new circuit concept which significantly improves the power-handling capability of a traveling-wave amplifier by coupling the active devices to the input gate line through discrete series capacitors is described. The approach is applied to a 1-W, 2-8-GHz monolithic amplifier design.

Reflect array antennas having monolithic sub-arrays with improved DC bias current paths

Abstract: Embodiments of active array antennas are generally described herein. Other embodiments may be described and claimed. In some embodiments, a reflect array antenna includes an array of rectangular monolithic sub-array modules arranged in a non-uniform pattern to leave a plurality of rectangular gaps in the pattern. A DC feed pin located within each gap may provide DC bias current to the sub-array modules. The sub-array modules may be mounted on a heat sink in the non-uniform pattern. The heat sink may have holes aligned with the gaps to allow passage of the DC feed pins. In some embodiments, an array cooling assembly may be coupled to the back of the heat sink to cool the reflect array antenna with a coolant.