Keyword: Manufacturing processes

Briefs: Electronics & Computers
Reconfigurable Microwave Phase Delay Element for Frequency Reference and Phase-Shifter Applications

A technique was developed to provide a reconfigurable high-precision microwave electrical phase delay for resonators and phase shifters. The invention employs multiple branches of transmission lines with open-ended or ground-ended terminations as...

Briefs: Electronics & Computers
High-Speed Isolation Board for Flight Hardware Testing

There is a need to provide a portable and cost-effective galvanic isolation between ground support equipment and flight hardware such that any unforeseen voltage differential between ground and power supplies is eliminated. An interface board was designed for use between the ground support...

Briefs: Manufacturing & Prototyping
Optimization of Indium Bump Morphology for Improved Flip Chip Devices

Flip-chip hybridization, also known as bump bonding, is a packaging technique for microelectronic devices that directly connects an active element or detector to a substrate readout face-to-face, eliminating the need for wire bonding. In order to make conductive links between...

Briefs: Manufacturing & Prototyping
Pre-Finishing of SiC for Optical Applications

A method is based on two unique processing steps that are both based on deterministic machining processes using a single-point diamond turning (SPDT) machine. In the first step, a high-MRR (material removal rate) process is used to machine the part within several microns of the final geometry. In the...

Briefs: Manufacturing & Prototyping

The term “tape setback method” denotes a method of designing and fabricating bonded joints between (1) box beams or other structural members made of laminated composite (matrix/ fiber)...

Briefs: Physical Sciences

Most optical systems require antennas with directive patterns. This means that the physical area of the antenna will be large in terms of the wavelength....

Briefs: Physical Sciences
Single-Antenna Temperature- and Humidity-Sounding Microwave Receiver

For humidity and temperature sounding of Earth’s atmosphere, a single-antenna/LNA (low-noise amplifier) is needed in place of two separate antennas for the two frequency bands. This results in significant mass and power savings for GeoSTAR that is comprised of hundreds of...

Briefs: Electronics & Computers
Reliability of Ceramic Column Grid Array Interconnect Packages Under Extreme Temperatures

A paper describes advanced ceramic column grid array (CCGA) packaging interconnects technology test objects that were subjected to extreme temperature thermal cycles. CCGA interconnect electronic package printed wiring boards (PWBs) of polyimide were...

Briefs: Sensors/Data Acquisition

Electronic biosensing technology could someday displace the multi-welled microplate, long a standard tool in biomedical research and diagnostic laboratories. Essentially arrays of...

Briefs: Manufacturing & Prototyping

Although the concept of nanotechnology (controlling matter on an atomic scale) dates back to 1959, it is only now becoming more commercially realized. It has the potential to challenge...

Briefs: Manufacturing & Prototyping

Engineers have long been aware of the potential of laser sintering to create innovative and beneficial medical products. Because it is an additive (layer-by-layer) manufacturing process,...

Briefs: Manufacturing & Prototyping

A lens that enables microscopic objects to be seen from nine different angles at once to create a 3D image has been developed. Other 3D microscopes use multiple lenses or cameras...

Articles: Photonics/Optics

Proponents of laser beam welding (LBW) and electron beam (EBW) welding each pronounce the singular praises of their favored technology, but often the best solution for a...

Briefs: Physical Sciences

Custom fiber optic bundle array assemblies developed by the Photonics Group at NASA Goddard Space Flight Center were an enabling technology for both the...

Application Briefs: Photonics/Optics

Machine vision technology is used extensively throughout manufacturing to improve product quality, increase productivity and reduce costs. One of the reasons for that is a machine vision system will work...

Articles: Lighting Technology

Glass and transparent plastics, especially acrylic resins, have long been used in the lighting industry for various aesthetic and functional purposes. As the industry has evolved,...

Articles: Lighting

Semiconductor-based light-emitting diode (LED) devices first appeared in the 1960s. Today, with the advances in materials, design, and manufacture of LED devices, we are seeing a wide spectrum of LEDs that are cheaper,...

Briefs: Lighting

Polymer nanofibers are nanoscale materials whose properties can be adjusted to provide desirable light management performance for high-efficiency solid-state lighting (SSL)...

Application Briefs: Lighting
Honeywell, Phoenix, AZ
Airbus, Toulouse, France

Honeywell's light-emitting diode (LED) wingtip navigation lighting is now standard on new production Airbus A320 Family aircraft, comprising the A318,...

Products: Lighting

Cree, Inc. (Durham, NC) offers the XLamp® CXA20 LED array, which can enable a 60-watt A-lamp equivalent while consuming 11 watts. With a single, uniform optical source, compact 22mm x 22mm footprint, and two-screw attachment, the...

Products: Lighting

Self-retaining, T-1 LED mounting spacers designed to assure uniform and perpendicular LED positioning while reducing assembly costs are available from Keystone Electronics Corp. (Astoria, NY). The spacers...

Products: Lighting

At 6mm thick, the stacked flat type light guide panel from DynaScan Technology (Taipei, Taiwan) is an assembly of simple flat light guides, without any curvature or wedge angle, allowing over 90% light...

Briefs: Electronics & Computers
Amperometric Solid Electrolyte Oxygen Microsensors With Easy Batch Fabrication

There is a great need for oxygen microsensors for aerospace and commercial applications. Current bulk or thick-film solid electrolyte oxygen sensors have the disadvantages of being large in size, high in power consumption, difficult to batch-fabricate, and high in...

Briefs: Physical Sciences

A compact and portable target assembly (Fig. 1) has been developed to measure the boresite alignment of LRO’s Lunar Orbiter Laser Altimeter (LOLA) instrument at the spacecraft...

Briefs: Semiconductors & ICs
Monitoring Digital Closed-Loop Feedback Systems

A technique of monitoring digital closed-loop feedback systems has been conceived. The basic idea is to obtain information on the performances of closed-loop feedback circuits in such systems to aid in the determination of the functionality and integrity of the circuits and of performance...

Briefs: Electronics & Computers

Smaller (volume, mass, power) electronics for a Ka-band (36 GHz) radar interferometer were required. To reduce size and achieve better control over RF-phase versus temperature, fully hybrid electronics...

Briefs: Electronics & Computers
Radiation-Tolerant, SpaceWire-Compatible Switching Fabric

Current and future near-Earth and deep space exploration programs and space defense programs require the development of robust intra-spacecraft serial data transfer electronics that must be reconfigurable, fault-tolerant, and have the ability to operate effectively for long periods of...

Briefs: Manufacturing & Prototyping
Infrared-Bolometer Arrays With Reflective Backshorts

Integrated circuits that incorporate square arrays of superconducting-transition-edge bolometers with optically reflective backshorts are being developed for use in image sensors in the spectral range from far infrared to millimeter wavelengths. To maximize the optical efficiency (and, thus,...

Briefs: Manufacturing & Prototyping
Method for Selective Cleaning of Mold Release From Composite Honeycomb Surfaces

Honeycomb structures are commonly employed as load- and force-bearing structures as they are structurally strong and lightweight. These structures include many aircraft and spacecraft surfaces, including aircraft wings and fuselages, spacecraft pressure vessels, and...