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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.

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At least 1,135 records · Page 63

Hall Mobility in SrTio (sub 3)

Conductivity and Hall coefficient measurements for electron mobilities in strontium titanate, discussing electron-phonon coupling and cryogenic experiments

ELECTRON MOBILITY↗

NASA's Mobile and Telecom Antenna Development at JPL

Chartered by NASA to develop and demonstrate enabling technologies for mobile and satellite telecommuniation systems, JPL has developed various antenna technologies throughout the microwave spectrum in the past two decades.

Telecom Antenna Mobile↗

Phased Arrays of Ground and Airborne Mobile Terminals for Satellite Communications

Phased array antenna is beginning to play an important in the arena of mobile/satellite communications. Two examples of mobile terminal phased arrays will be shown. Their technical background, challenges, and cost drivers will be discussed. A possible solution to combat some of the deficiencies of the conventional phased array by exploiting the phased reflectarray technology will be briefly presented.

communication satellites mobile phased array refle↗

A Real-Time Control System for a Mobile Redundant 7DOF Arm

This paper describes the design and implementation of a real-time control system with multiple modes of operation for a mobile redundant dexterous manipulator. The paper describes the hardware and software components of the VME bus environment. Experimental results on real-time control of the Robotics Research arm using the manipulator control system are also presented in the paper.

avoidance angle control↗