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Briefs Electronics & Computers
Monitoring and Charging System for a High-Power Battery
Figure 1 is a simplified block diagram showing (1) a high-power rechargeable battery comprising multiple series-connected modules, each module containing multiple series-connected...
Briefs Electronics & Computers
Quantum Network Testbed
A document describes the world’s first quantum network testbed — an Internet-compatible fiber-optic data-communication network that is kept extremely secure by use of encryption with quantum key distribution (QKD). The testbed, located in the Boston metropolitan area, includes ten nodes, of which four run continuously...
Briefs Electronics & Computers
Time Coding of Asynchronously Transmitted Multi-Source Data
A method of time coding of asynchronously transmitted data from multiple sources has been invented. The method is especially applicable to a data-acquisition and transfer system that...
Articles Communications
The Ballistic Missile Defense System: An Integrated Approach to Global Defense
Although the end of the Cold War signaled a reduction in the likelihood of global nuclear conflict, the threat from ballistic missiles has grown steadily as...
Briefs Electronics & Computers
Variable-Data-Rate Speech Encoder
Avariable-data-rate (VDR) speech encoder has been designed to be interoperable with, and eventually to supplant, the many different voice encoders now used in military communication systems. Because these older...
Briefs Electronics & Computers
Miniature Semiconductor Diodes as Pumps and Motors
Experiments have shown that when a miniature semiconductor diode floats in an aqueous solution and an alternating electric field is applied, (1) the diode rectifies the alternating potential...
Briefs Electronics & Computers
Interactive DataWall
The Interactive DataWall (IDW) is a computer-driven, high-definition display, large enough to be visible simultaneously to multiple observers, that presents information from multiple sources and exploits advanced techniques...
Briefs Test & Measurement
Life Tests of a Microwave MEMS Capacitive Switch
Life tests have demonstrated the longevity of an electrostatically actuated capacitive switch of a microelectromechanical systems (MEMS) type suitable for handling radio signals having...
Briefs Electronics & Computers
Progress in Canted Sector Antennas and Non-Periodic Arrays
Progress has been made in a continuing effort to develop low-geometric-profile, wide-frequency-band microwave antennas intended for incorporation into wide-band aperiodic arrays for use...
Briefs Electronics & Computers
Improved Magnetic Sensor Based on Giant Magneto-Impedance
A low-power, highly stable electronic sensor circuit for measuring a small change in the ambient magnetic field with high sensitivity exploits the giant magneto-impedance (GMI) effect,...
Briefs Electronics & Computers
Nanowire-Based Chemical and Biological Sensor Arrays
Acontinuing effort that supplements and complements the one summarized in the immediately preceding article is dedicated to the development of nanowire-based sensor arrays, with emphasis on maximizing the utility of such arrays for real-time sensing of molecular species associated with chemical...
Briefs Sensors/Data Acquisition
Dense Functionalized-Nanowire Biosensor Arrays
Progress has been made in the development of compact sensor arrays containing molecular electronic devices for detecting molecules of interest (especially biomolecules) with high sensitivity and...
Briefs Electronics & Computers
A Study of Two Ferrocene-Based Molecular Electronic Devices
Acomputational-simulation study of two ferrocene-based molecular electronic devices was performed as part of a continuing effort to develop a capability for ab initio design of...
Briefs Electronics & Computers
Real-Time Simulation and Semiautomated Design of Complex ICs
A project called “System on a Chip Real-Time Emulation” (SOCRE) was undertaken to develop and demonstrate a methodology of simulation of operation and semiautomated design of...
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