Stories
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Briefs: Semiconductors & ICs
A device denoted a board saver has been developed as a means of reducing wear and tear of a printed-circuit board onto which an antifuse field-programmable gate array (FPGA) is to be eventually...
Briefs: Semiconductors & ICs
Digital Synchronizer Without Metastability
A proposed design for a digital synchronizing circuit would eliminate metastability that plagues flip-flop circuits in digital input/output interfaces. This metastability is associated with sampling, by use of flip-flops, of an external signal that is asynchronous with a clock signal that drives the...
Briefs: Materials
Silicon Wafer-Scale Substrate for Microshutters and Detector Arrays
The silicon substrate carrier was created so that a large-area array (in this case 62,000+ elements of a microshutter array) and a variety of discrete passive and active devices could be mounted on a single board, similar to a printed circuit board. However, the density and...
Briefs: Semiconductors & ICs
The figure schematically depicts an oscillator circuit for driving a piezoelectric transducer to excite vibrations in a mechanical structure. The circuit was designed and built to satisfy...
Briefs: Semiconductors & ICs
A three-stage monolithic millimeter-wave integrated-circuit (MMIC) amplifier designed to exhibit low noise in operation at frequencies from about 100 to somewhat above 180 GHz has been built and tested....
Briefs: Semiconductors & ICs
Generic structures have been conceived for multiplexer blocks to be implemented in field-programmable gate arrays (FPGAs) based on four-gate field-effect transistors (G4FETs). This...
Briefs: Semiconductors & ICs
A system comprising very-large-scale integrated (VLSI) circuits is being developed as a means of bioinformatics-oriented analysis and recognition of patterns of fluorescence generated...
Briefs: Semiconductors & ICs
Modules containing multiple monolithic microwave integrated-circuit (MMIC) chips have been built as prototypes of transmitting/receiving (T/R) modules for millimeter-wavelength radar systems, including...
Briefs: Semiconductors & ICs
Some Improvements in Utilization of Flash Memory Devices
Two developments improve the utilization of flash memory devices in the face of the following limitations: (1) a flash write element (page) differs in size from a flash erase element (block), (2) a block must be erased before its is rewritten, (3) lifetime of a flash memory is typically...
Briefs: Semiconductors & ICs
GPS/MEMS IMU/Microprocessor Board for Navigation
A miniaturized instrumentation package comprising a (1) Global Positioning System (GPS) receiver, (2) an inertial measurement unit (IMU) consisting largely of surface-micromachined sensors of the microelectro-mechanical systems (MEMS) type, and (3) a microprocessor, all residing on a single circuit...
Briefs: Semiconductors & ICs
Two single-stage InP heterojunction bipolar transistor (HBT) amplifiers operate at 184 and 255 GHz, using Northrop Grumman Corporation’s InP HBT MMIC (monolithic microwave integrated...
Blog: Materials
Stretchable Electronics
A design for bendable electronic devices produces parts that can be wrapped around complex shapes, without reducing electronic function. The technology is based on semiconductor nanomaterials that offer high stretchability and large twistability. Potential uses include electronic devices for eye cameras, smart surgical...
Briefs: Semiconductors & ICs
To increase the usefulness of monolithic millimeter-wave integrated circuit (MMIC) components at submillimeter-wave frequencies, a chip has been designed that...
Briefs: Semiconductors & ICs
A logic design has been conceived for a field-programmable gate array (FPGA) that would implement a complex system of multiple digital state-space filters. The main innovative aspect of...
Briefs: Semiconductors & ICs
Prototype logic gates made of n-channel junction field-effect transistors (JFETs) and epitaxial resistors have been demonstrated, with a view toward eventual implementation of digital...
Briefs: Semiconductors & ICs
In a proposed improvement in complementary metal oxide/semi con ductor (CMOS) image detectors, two additional implants in each pixel would effect vertical isolation between the metal oxide/...
Briefs: Semiconductors & ICs
A computer system denoted a change-detection onboard processor (CDOP) is being developed as a means of processing the digitized output of a synthetic-aperture radar (SAR) apparatus...
Briefs: Test & Measurement
Power amplifiers comprising InP-based high-electron-mobility transistors (HEMTs) in coplanar-waveguide (CPW) circuits designed for operation at frequencies of hundreds of gigahertz, and a...
Briefs: Semiconductors & ICs
The world’s first silicon-based complementary metal oxide/semi-conductor (CMOS) integrated-circuit voltage-controlled oscillator (VCO) operating in a frequency range around 324 GHz...
Blog: Semiconductors & ICs
Lab-On-A-Chip
A new type of device called a "lab-on-a-chip" could result in a future generation of instant home tests for illnesses, food contaminants and toxic gases. But today these portable, efficient tools are often stuck in the lab themselves. Specifically, in the labs of researchers who know how to make them from scratch. University of...
Briefs: Semiconductors & ICs
Several improved designs for complementary metal oxide/semiconductor (CMOS) integrated- circuit image detectors have been developed, primarily to reduce dark currents (leakage currents) and...
Briefs: Energy
Figure 1 depicts a monolithic microwave integrated-circuit (MMIC) single-stage amplifier containing an InP-based high- electron-mobility transistor (HEMT) plus coplanar-waveguide (CPW)...
Briefs: Semiconductors & ICs
An effort to extend the low-temperature operational limit of supercapacitors is currently underway. At present, commercially available non-aqueous supercapacitors are rated for a minimum operating temperature of...
Briefs: Semiconductors & ICs
A method of fabricating Bi2–xSbxTe3-based thermoelectric microdevices involves a combination of (1) techniques used previously in the fabrication of integrated circuits...
Briefs: Semiconductors & ICs
To help satisfy a need for high-density logic circuits insensitive to radiation, it has been proposed to realize inverse majority gates as microscopic vacuum electronic devices. In comparison with...
Briefs: Semiconductors & ICs
A regio-regular poly (3-hexylthiophene) (RRP3HT) thin-film transistor having a split-gate architecture has been fabricated on a doped silicon/silicon nitride substrate and characterized....
Briefs: Semiconductors & ICs
A split-block waveguide circuit that rotates polarization by 90° has been designed with WR-3 input and output waveguides, which are rectangular waveguides used for a nominal...
Blog: Electronics & Computers
High-Frequency CMOS Circuit
Researchers from the University of Florida and Texas Instruments have developed a high-frequency circuit made with a common CMOS transistor. The circuit is expected to find its way into environmental monitoring equipment to detect pollution, noxious gases or bioterrorism agents. It can also be used in medical equipment...
Briefs: Semiconductors & ICs
Error-Detecting Counters for FPGA and ASIC State Machines
Error-detecting counters have been proposed as parts of fault-tolerant finite state machines that could be implemented in field-programmable gate arrays (FPGAs) and application-specific integrated circuits that perform sequential logic functions. The use of error-detecting counters would...
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Blog: Lighting
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Quiz: Power
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