Stories
33
0
4380
30
Briefs: Electronics & Computers
Study of Mixed-Norm Controllers for Suppressing Vibrations
A report describes a study of nominal-performance (H2), robust-performance (μ-synthesis), and mixed H2/μ methods for designing fixed-order controllers applied to an active-tendon control system for suppressing seismic vibrations in a structure. The study involves an application of...
Briefs: Electronics & Computers
A rectangular-constellation-based blind-equalization (RECBEQ) technique implemented by a real-time, recursive algorithm has been developed to improve the performances of radio receivers...
Briefs: Electronics & Computers
Several microwave-cavity devices at various stages of development are designed for heating material samples or process streams with uniform temperature-versus-time histories. These devices...
Briefs: Electronics & Computers
Snapshot CCD Camera With Microelectromechanical Shutter
A proposed charge-coupled-device (CCD) camera would be mechanically shuttered by a planar array of micromachined, electromechanically actuated shutters. This proposal has arisen as part of the solution to the problem of designing a visible/near-infrared imaging spectrometer using a commercial...
Briefs: Electronics & Computers
Spectrum would be utilized more efficiently than in CDMA and FDMA.
Briefs: Electronics & Computers
This filter closely approximates the desired wave shape, regardless of the bit rate.
Briefs: Electronics & Computers
A Magnetic Random-Access Memory (MagRAM) is an array of bistable magnetic memory elements with semiconductor amplifier and addressing circuitry. MagRAMs are in the early stages of development, which has been...
Briefs: Electronics & Computers
A dc-to-dc switching power converter of the three-level, pulse-width-modulated, buck type has been designed, built, and verified to operate at temperatures from ambient down to -196 °C...
Briefs: Electronics & Computers
Color interference filters for individual pixels in solid-state electronic image and display devices would be made of thin metal and dielectric films, according to a proposal. The proposed...
Briefs: Electronics & Computers
Interdigital overlay capacitors have been invented to decrease the amount of integrated-circuit chip area needed to accommodate a given amount of capacitance. In most very-large-scale...
Briefs: Electronics & Computers
Optical Power Supply and Data Communication for APS Circuits
Active-pixel-sensor (APS) circuits and perhaps other dense complementary metal oxide/semiconductor (CMOS) very-large-scale integrated (VLSI) circuits would be powered by infrared beams transmitted by laser diodes and received by photodetectors, according to a proposal. Clock signals for...
Briefs: Electronics & Computers
A patent (U.S. Patent No. 5,680,557, "Natural Computing System and Environment") describes an invention that allows people to do computations by using time-tested and trusted ways of representing data and information....
Briefs: Electronics & Computers
A novel cathode ray tube (CRT), using a single electron gun and a movable screen, has been developed that now enables miniaturization of a full-color CRT with the same...
Briefs: Electronics & Computers
Thermoplastic Weld Has Ergonomic and Environmental Benefits
Thermoplastic coupling is a patented welding process that is used to join thermoplastic parts. At the drill press, during a connector design brainstorming session, an engineer at Lucent Technologies' Bell Laboratories inserted a plastic rod into a cavity that was slightly too small in its...
Briefs: Electronics & Computers
Prolonging the Lives of Rechargeable Lithium-Ion Cells
Several modifications of the design and operation of lithium-ion rechargeable electrochemical cells have been proposed to prolong the cycle lives of the cells. As explained below, overdischarge can result in dissolution of a metal current collector in the anode of a cell, with consequent...
Briefs: Electronics & Computers
A prototype mixer designed for operation at input frequencies near 2.5 THz incorporates a planar Schottky-barrier diode and a radio-frequency (RF) filter that are parts of an integrated circuit...
Briefs: Electronics & Computers
Reflective flat-panel color display devices based on surface plasmons are undergoing development. Heretofore, no reflective flat-panel color display devices have been available. The active...
Briefs: Electronics & Computers
Surface-plasmon tunable filters (SPTFs) have been proposed for use in generating scrolling colors on the faces of liquid-crystal display (LCD) devices. In comparison with a conventional...
Briefs: Electronics & Computers
The Desktop Satellite Data Processor (DSDP) is a prototype computer system for processing telemetry data received from, and command data to be transmitted to, a spacecraft in orbit around the...
Briefs: Electronics & Computers
Luneberg Lenses Made of Open-Cell Polyurethane Foams
A Luneberg lens is a microwave lens consisting of a series of concentric shells of differing dielectric constants. The highest dielectric constant, or refractive index, resides at the core and the lowest, at the outer shell. Microwaves passing through this arrangement of shells are focused in the...
Briefs: Electronics & Computers
A class of developmental photonic temperature-measuring systems is based on the use of miniature, fiber-optic-coupled Fabry-Perot interferometers as temperature transducers. These systems are intended...
Briefs: Electronics & Computers
Integrated-circuit image sensors of a proposed type would be capable of operation in either the wavelength band of 0.5 to 2.5 *m, the wavelength band of 2.8 to 5.8 *m, or both bands simultaneously. Called...
Briefs: Electronics & Computers
The Multi-Board Module (MBM) scheme has been conceived to provide a cost-effective way to combine digital electronic circuits into dense, lightweight packages, within which high-speed signals...
Briefs: Electronics & Computers
Improved pulsed inductive plasma accelerators are undergoing development for use as long-life thrusters for propulsion of spacecraft on interplanetary missions and for maneuvering of...
Briefs: Electronics & Computers
A concept for obtaining high energy-conversion efficiency in a solar photovoltaic system involves (1) concentration and spectral dispersion of sunlight and (2) use of several types of solar...
Briefs: Electronics & Computers
An Internet-based software system, called the "Web Interface for Telescience" (WITS), enables geographically dispersed scientists to participate in scientific exploration of remote planets by use of...
Briefs: Electronics & Computers
Eight-Channel WDM Fiber-Optic Data-Communication System
A proposed wavelength-division-multiplexing (WDM) optical communication system would feature a single optical fiber carrying eight channels of digital data signals. In the original application, the signal in each channel would be a serial digital video-camera output, but the system could just...
Briefs: Electronics & Computers
Quantum-well infrared photodetectors (QWIPs) that are designed to exploit transitions between bound and quasi-bound electron quantum states and that incorporate random reflectors are undergoing...
Briefs: Electronics & Computers
Tracks for the guidance of magnetic bubbles propagating in the input and output lines of Vertical-Bloch-Line memory devices can be made in the form of ridges instead of in the traditional form of...
Top Stories
Blog: Sensors/Data Acquisition
Going for Gold in Winter Olympic Curling
Blog: Energy
Batteries that Can Withstand the Cold
INSIDER: Design
Advancing All-Solid-State Batteries
Blog: Design
Blog: Materials
Making Tungsten Carbide a More Viable Alternative
INSIDER: Power
Webcasts
Upcoming Webinars: Sensors/Data Acquisition
Beyond AI-Copy-Paste Engineering: Advanced AI-Integration Success...
Upcoming Webinars: Energy
Battery Abuse Testing: Pushing to Failure
Upcoming Webinars: Power
A FREE Two-Day Event Dedicated to Connected Mobility
Upcoming Webinars: Test & Measurement
Choosing the Right N-Port Strategy: Multiport VNAs vs. Switch...
Upcoming Webinars: Energy
2026 Battery & Electrification Summit (Online)
Upcoming Webinars: Mechanical & Fluid Systems
The Over-Engineering Trap: Aligning Custom Equipment Specs with...
