Semiconductors & ICs

Broadband 1.2- and 2.4-mm Gallium Nitride (GaN) Power Amplifier Designs

The US Army Research Laboratory (ARL) has been working with Raytheon to design efficient, broadband, linear, high-power amplifiers and robust, broadband, low-noise amplifiers for future adaptive, multimodal radar systems. Raytheon has a high-performance, W-band, gallium nitride (GaN) fabrication process and a process design kit (PDK) that ARL used to design low-noise amplifiers, power amplifiers, and other circuits for future radar, communications, and sensor systems. After the first set of ARL and Raytheon designs was submitted for fabrication, test designs of broadband Class A/B power amplifiers were developed. While these designs did not get fabricated in the initial effort, they serve to demonstrate the performance, bandwidth, and capability of this GaN process and could potentially be fabricated in the future.

Posted in: Articles, Aerospace, Defense, Electronic Components, Power Management, Power Supplies, Mechanical Components, RF & Microwave Electronics, Semiconductors & ICs
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Using RISC-V to Simplify Data Logging in Space

Worldwide demand for low Earth orbit satellites is increasing at an unprecedented pace, driven by diverse needs such as faster and more affordable Internet access, and faster revisit rates with finer resolution for imaging data. The satellite payload instruments performing communications or imaging functions are becoming increasingly sophisticated and capable and require the collection of increasing amounts of telemetry data to ensure the safe and reliable operation of the satellite.

Posted in: Articles, Aerospace, Data Acquisition, Power Management, Thermal Management, Mechanical Components, Medical, Patient Monitoring, Semiconductors & ICs, Data Acquisition, Detectors, Instrumentation, Measuring Instruments, Monitoring, Test & Measurement
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Streamlining EMC Solutions for Avionics Interfaces

Lightning strikes to jet airliners are common - about once every 1000 flight hours. The DO-160G standard, Environmental Conditions and Test Procedures for Airborne Equipment, is a standard for the environmental testing of avionics hardware. Many airplane manufacturers specify DO-160G Section 22, lightning induced transient susceptibility, as a requirement for critical systems like guidance, radars, communications, engine control, and heat and air controls. Aircraft fuselage, wing and tail flight controls, wing tips, fin tips, engine nacelles, and landing gear are the areas most likely to be hit by lightning strikes.

Posted in: Articles, Aeronautics, Aerospace, Aviation, Communications, Electronic Components, Semiconductors & ICs, Test & Measurement
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Compact Power Amplifier Solution for Electronic Warfare

Wolfspeed, a Cree company, provides field-tested silicon carbide (SiC) and gallium nitride (GaN) power and RF solutions. As a leader in wide-bandgap semiconductor technology, Wolfspeed partners with designers to build faster, smaller, lighter, and more powerful electronic systems.

Posted in: Articles, Aerospace, Defense, Board-Level Electronics, Power Management, Power Supplies, Materials, Machinery, Mechanical Components, Power, Power Transmission, RF & Microwave Electronics, Semiconductors & ICs
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Merging Antenna and Electronics Boosts Energy and Spectrum Efficiency

By integrating the design of antennas and electronics, researchers from the Georgia Institute of Technology have boosted the energy and spectrum efficiency for a new class of millimeter-wave transmitters, allowing improved modulation and reduced generation of waste heat.

Posted in: Articles, Aerospace, Electronics, Electronics & Computers, Energy, Energy Efficiency, Smart Grid, Antennas, RF & Microwave Electronics, Semiconductors & ICs
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Taming the Thermal Behavior of Solid-State Military Lasers

Laser diodes and laser diode arrays (LDAs) are widely used throughout military systems, for sighting and range finding, but also at high power levels as offensive and defensive weapons. In companion with much higher-power chemical lasers, these high-power optical sources can generate kilowatts of optical power (as arrays) for use in neutralizing incoming missiles, rockets, and armaments and for long-distance offensive strikes. But laser diodes are also still inefficient, and a great deal of the energy supplied to a laser diode or an LDA is converted into heat, which must be safely dissipated to ensure a long operating lifetime for the solid-state devices.

Posted in: Articles, Aerospace, Board-Level Electronics, Electronics & Computers, Power Management, Thermal Management, Ceramics, Materials, Metals, Packaging, Lasers & Laser Systems, Optics, Photonics, Semiconductors & ICs
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Fast-Tracking Autonomous Vehicles with Simulation

Artificial intelligence developments are set to fundamentally transform mobility, whether it is mobility of weapon payloads, supply deliveries, urban commuters, warehouse goods, delivery packages, or intercontinental bulk shipments.

Posted in: Articles, Aerospace, Defense, Semiconductors & ICs, Sensors, Computer simulation, Mathematical models, Artificial intelligence, Computer software / hardware, Neural networks, Autonomous vehicles
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