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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Soft-Switching GaN-Based Isolated Power Conversion System for Small Satellites with Wide Input Voltage Range
As we pursue the advancement of small satellites for space missions with more capabilities, there is a significant need for cutting-edge, modularly configurable, high density power converters. This article proposes a fixed switching frequency, high efficiency, compact isolated converter for sensitive loads such as radar, communication systems, or other instruments on small satellites.
CyberGAN: Generating High-Fidelity Cybersecurity Data with Generative Adversarial Networks (GANs)
UNKNOWN
GaN-Based, Ultra-Compact Power Conversion System for the PUFFER Autonomous Mobility Platform
No abstract provided
NASA Electronic Parts Assurance Group (NEPAG): Preliminary ESD Investigation of Commercial GaN HEMT
No abstract provided
Demonstration of a Switched Wideband GaN High-Power Amplifier for Future Space Missions
In this paper, we present the architecture of a Ka-band switched, wideband, high efficiency gallium nitride based high-power amplifier. The architecture is validated by characterizing the driver and power amplifier chain. The measured results include Pout, Gain, PAE, RMS EVM for QPSK, Offset-QPSK, 8PSK, 16APSK, and 16QAM constellations, 3rd order IMD products, and noise figure. The wide bandwidth and high output power of the amplifier will enable future user terminals to interoperate between multiple service provider’s space networks.
Demonstration of a Switched Wideband GaN High-Power Amplifier for Future Space Missions
In this paper, we present the architecture of a Ka-band switched, wideband, high efficiency gallium nitride based high-power amplifier. The architecture is validated by characterizing the driver and power amplifier chain. The measured results include Pout, Gain, PAE, RMS EVM for QPSK, Offset-QPSK, 8PSK, 16APSK, and 16QAM constellations, 3rd order IMD products, noise figure, and added phase noise. The wide bandwidth and high output power of the amplifier will enable future user terminals to interoperate between multiple service provider’s space networks.
Demonstration of a Switched Wideband GaN High-Power Amplifier for Future Space Missions
In this paper, we present the architecture of a Ka-band switched, wideband, high efficiency gallium nitride based high-power amplifier. The architecture is validated by characterizing the driver and power amplifier chain. The measured results include Pout, Gain, PAE, RMS EVM for QPSK, Offset-QPSK, 8PSK, 16APSK, and 16QAM constellations, 3rd order IMD products, noise figure, and added phase noise. The wide bandwidth and high output power of the amplifier will enable future user terminals to interoperate between multiple service provider’s space networks.
Collaborative Evaluation of GaN FETs and Gate Drivers
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Benefits of Ka-Band GaN MMIC High Power Amplifiers With Wide Bandwidth and High Spectral/Power Added Efficiencies for Cognitive Radio Platforms
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Demonstration of GaN HEMT MMIC High-Power Amplifier for Lunar Proximity Communications
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Impurity incorporation and diffusion from regrowth interfaces in N-polar GaN photocathodes and the impact on quantum efficiency
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Effect of N2* and N on GaN nanocolumns grown on Si(111) by molecular beam epitaxy
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Thermionic field emission in GaN nanoFET Schottky barriers
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A microfabricated sun sensor using GaN-on-sapphire ultraviolet photodetector arrays
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Design and Validation of a 20-kVA, Fully Cryogenic, Two-Level GaN-Based Current Source Inverter for Full Electric Aircrafts
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