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Displaying 40151 - 40175 of 73960

Vector Mixer Characterization for Image Mixers

January 1, 2004
Author(s)
Joel Dunsmore, Sean Hubert, Dylan Williams
The vector mixer characterization method first introduced by Dunsmore [1] can be used only for mixers where the Local Oscillator (LO) frequency lies between the RF input and output frequencies. Attempts to use the method for mixers with the LO greater than

Virtual Surface Calibration Database

January 1, 2004
Author(s)
Thomas B. Renegar, Theodore V. Vorburger, Son H. Bui
This paper presents the development of a virtual surface calibration database for parameter evaluation and algorithm verification. The database runs from a web site at the National Institute of Standards and Technology (NIST), USA. Companies, universities

Virtual Testing of Ready-Mixed Concrete

January 1, 2004
Author(s)
Jeffrey W. Bullard
The development of a virtual testing system is no small task. It requires fundamental scientific research into the physics, chemistry, and materials science of concrete. The Virtual Cement and Concrete Testing Laboratory consortium has identified three

Zigzag Shaped Magnetic Sensors

January 1, 2004
Author(s)
S da, Willard C. Uhlig, A Kos, Joe Aumentado, Michael J. Donahue, John Unguris, David P. Pappas
Magnetism in zigzag shaped thin film elements is investigated using scanning electron microscopy with polarization analysis, magneto-transport measurements, and micromagnetic simulations. We find that the angle of magnetization alternates along the length

3D Cable-Based Cartesian Metrology System

December 31, 2003
Author(s)
R L. Williams, James S. Albus, Roger V. Bostelman
A novel cable-based metrology system is presented wherein six cables are connected in parallel from groundmounted string pots to the moving object or tool of interest. Cartesian pose can be determined for feedback control and other purposes by reading the
Displaying 40151 - 40175 of 73960
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