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Showing 1 to 20 of 22 for “"radiation hardened"”.
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Fault tolerant design implementation on radiation hardened by design SRAM-Based FPGAs
… Virtex-5QV is the first commercially available Radiation Hardened By Design (RHBD) SRAM-based FPGA; however, not all of its internal components are hardened against radiation-induced errors. This thesis examines and quantifies the additional considerations and techniques designers should employ …
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Radiation-Hardened Delay-Insensitive Asynchronous Circuits for Multi-Bit SEU Mitigation and Data-Retaining SEL Protection
<p>Radiation can have highly damaging effects on circuitry, especially for space applications, if designed without radiation-hardening mechanisms. Delay-insensitive asynchronous circuits inherently have promising potentials in mitigating the effects of radiation due to their delay insensitivity. …
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Design and Implementation of a Radiation Hardened GaN Based Isolated DC-DC Converter for Space Applications
Power converters used in high reliability radiation hardened space applications trail their commercial counterparts in terms of power density and efficiency. This is due to the additional challenges that arise in the design of space rated power converters from the harsh environment they need to …
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Design of a satellite-based microelectronic radiation testing experiment
… was designed. A printed circuit board with radiation-hardened components was laid out to test various families of static RAM chips and an experimental Gallium Arsenide integrated circuit. Computer aided design tools produced by Cadence Design Systems were used to logically and physically …
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Design of a universal test platform for radiation testing of digital components
… standard parts that can later be replaced with radiation hardened parts as budgets permit. Control of the test hardware is via a RS-232 serial interface, which allows remote control programming and monitoring of the test hardware and device being tested.
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Silicon Germanium BiCMOS Comparator Designed for Use in An Extreme Environment Analog to Digital Converter
… thesis demonstrates the process of creating a radiation hardened and extreme temperature operating comparator from start to finish in the 90 nm SiGe 9HP process node. This includes the entire design flow from examining comparator topologies, to designing the initial comparator circuits, to …
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The Trapped Charge Interfacial Modulation of the Electron Beam Induced Current in Metal Oxide Semiconductor Capacitors
Radiation-hardened (15) MOS capacitors were fabricated on 1-10 ohm-cm, p-type 100 silicon and were placed in the focal plane of a scanning electron microscope (SEM) to selectively populate and generate the oxide traps. As the electron beam scans from a region of the MOSC in the WRITE state to a …
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Study of Radiation Effects on FPGA and GPU based Neural Networks Accelerator Designs
… they are used in environments affected by radiation such as space exploration, medical devices, etc. Therefore, the reliability of IC devices in radiation-hazard environments has become an important issue. Energetic particles, such as protons, neutrons, and heavy ions, can penetrate the …
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Alternate configurations for blocked impurity band detectors
… Band (BIB) detectors are highly efficient, radiation-hardened photodetectors that operate in the range of 5-40 æm. To further extend BIB coverage to 40-350 æm, Ge and GaAs BIB detectors are under development; however, these new detectors face fabrication issues that have delayed their …
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Authenticated messages for a real-time fault-tolerant computer system
… message authentication. The X-38 FTPP uses radiation-hardened embedded processors, which have relatively limited computational power. Therefore, the challenge is to identify a scheme that is secure enough to guarantee that signatures cannot be forged, yet fast enough to sign messages at a …
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A fault tolerant bus interface unit based on the nubus standardized bus architecture
… susceptible to transient faults caused by cosmic radiation or alpha particles. In order for a system to be usable in such an environment, it must be designed to be upset tolerant. Functionality of the design must be intact in the presence of transient faults. Several standardized bus architectures …
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Vivid: An Operating System Kernel for Radiation-Tolerant Flight Control Software
… the challenge of defending flight software from radiation errors without a radiation-hardened processor. A new real-time operating system, Vivid, explores the use of redundant multithreading to protect critical software components from radiation errors, and offers new abstractions to reduce the …
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Data-Driven and Dynamically Feasible Trajectory Generation for Real-Time Powered Descent Guidance and Robotic Exploration
… Due to the limited computational abilities of radiation-hardened processors and an increased need for spacecraft and robotic autonomy, specialized algorithms capable of running in realtime constitute enabling technologies for space exploration. Three major contributions are developed in this …
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Localization of a robotic crawler for CANDU fuel channel inspection
… position. The proposed solution shall use radiation hardened resolver wheels, whereas the proof-of-concept prototype used encoder wheels of the same accuracy. The UKF was selected as the ideal sensor fusion algorithm for use in this application. Benchmarking was completed to compare the …
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Accelerating Embedded HOWFSC Algorithms
… context. We utilize functional analogs to radiation-hardened processors, using the NXP T1040 in place of the BAE RAD5545, and the NXP LS1046 in place of the LS1046-Space. We find that the FFTW library enabled a factor of six speedup for 4096 × 4096 fast Fourier transforms (FFTs), and a …
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Circuit designs for low-power and SEU-hardened systems
… free or error immune designs. Until recently, radiation effects were a major concern in space applications only. With technology scaling reaching nanometer level, terrestrial radiation has become a growing concern. As a result Single Event Upsets (SEUs) have become a major challenge to robust …
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Assessment and Analysis of Commercial Off the Shelf Devices for Space Applications
… orbit to deep-space missions. However, the harsh radiation environment in space exposes electronic systems to intense cosmic rays and solar radiation, which poses significant risks of damage and failure. Ensuring the reliability and efficiency of these systems is therefore a crucial priority. This …
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DC, RF, and Thermal Characterization of High Electric Field Induced Degradation Mechanisms in GaN-on-Si High Electron Mobility Transistors
… make GaN a prime candidate for high-power and radiation-hardened applications using a smaller form-factor. Several different types of semiconductor substrates have been considered for their thermal properties and cost-effectiveness, and Silicon (Si) has been of increasing interest due to a …
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Development of Tools Needed for Radiation Analysis of a Cubesat Deployer Using Oltaris
… of the major ones being the lack of sufficient radiation shielding on the Poly-Picosatellite Orbital Deployer (P-POD). The P-POD attaches to a launch vehicle transporting a primary spacecraft and takes the CubeSats out into their orbit. As the demand for interplanetary exploration grows, there …
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