Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 28 for “"Circuit architecture"”.
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A Neuronal Circuit Architecture for Angular Integration in Drosophila
… angular heading over time. However, a neuronal-circuit architecture for computing heading remains unknown in any species. In this thesis, I describe a set of neurons in the Drosophila central complex whose wiring and physiology provide a means to shift an angular heading estimate when the fly …
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An optimization approach to relate neural circuit architecture, loss landscapes and learning performance in static and dynamic tasks
… is challenging for large and complex neural circuits. There is a fundamental difficulty in determining how individual neurons or synapses affect the overall behavior of a circuit, which is known as the credit assignment problem. Rather than looking at single neurons or synapses then, one must …
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Analysis of variation in on-chip waveguide distribution schemes and optical receiver circuits
… robustness of an ultrashort pulse-based receiver circuit architecture is analyzed. Some variation sources considered are optical input power variation, load capacitance variation, parasitic capacitive coupling, and power supply noise. Simulation results show that, for both the passive waveguide …
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Asynchronous Circuit Synthesis Using Multi-Threshold NULL Convention Logic
… alternative to traditional synchronous circuit design grows, hardware designers must reconsider the traditional clock tree. By doing away with the constrains of a clock, asynchronous sequential circuit designs can achieve a much greater level of efficiency. The utilization of …
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Efficient and Scalable Computing for Resource-Constrained Cyber-Physical Systems: A Layered Approach
… characteristics of each system layer (e.g., the circuit, architecture, and operating system layers) and their interactions to discover and explore the optimal system tradeoffs among performance, efficiency, and scalability. At the circuit layer, we investigate the benefits of novel power delivery …
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Development of an architectural design tool for 3-D VLSI sensors
… enabling the development of new high-performance architectures for applications such as focal plane sensors. Due to the high costs involved in 3-D VLSI fabrication and the fabrication complexity of 3-D integration, analysis of the design and process tradeoffs for a particular application is …
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Design of robust spin-transfer torque magnetic random access memories for ultralow power high performance on-chip cache applications
… under process variations by employing device-circuit-architecture co-design techniques. A devices-to-systems simulation framework was developed to evaluate the effectiveness of the techniques proposed in this dissertation. An optimization methodology for minimizing the failure probability of …
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NON-VOLATILE IN-MEMORY COMPUTING WITH SKYRMIONS AND PHASE CHANGE MEMORIES
… elements in the conventional von Neumann architectures, is a crucial design technique for enabling ultra-low power intelligent edge devices. Due to power/area versus throughput trade-offs (such as to increase the complexity of periphery circuitry to enable higher parallelism or result …
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Asynchronous Circuit Stacking for Simplified Power Management
<p>As digital integrated circuits (ICs) continue to increase in complexity, new challenges arise for designers. Complex ICs are often designed by incorporating multiple power domains therefore requiring multiple voltage converters to produce the corresponding supply voltages. These converters not …
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Efficient Algorithms, Protocols and Hardware Architectures for Next-Generation Cryptography in Embedded Systems
… making IoT security a major concern. Security architectures for IoT devices, both software and hardware, must be low-power and have low energy consumption, while still providing strong cryptographic guarantees and side-channel resilience. Network security protocols use a variety of …
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Protocols and Devices for Scalable Spin-Photon Quantum Networks
… challenges, we propose a photonic integrated circuit architecture with heterogeneously integrated emitter-nanocavity systems for faithfully transferring photonic qubits onto diamond color centers. This hybrid platform offers arbitrary photonic routing, phase stability, and reconfigurability to …
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Mechanistic Connectomics in Drosophila
… connectomes in a causal manner to explain circuit function. Multiple connectomes now exist for the adult fruit fly, \textit{Drosophila melanogaster}. This thesis develops statistics and analyses for Mechanistic Connectomics using these datasets to analyse the circuit architectures that …
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Exploring Spin-transfer-torque devices and memristors for logic and memory applications
… have begun exploring newer devices and architectures to replace CMOS.</p> <p>Due to their non-volatility and high density, Spin Transfer Torque (STT) devices are among the most prominent candidates for logic and memory applications. In this research, we first considered a new logic style …
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A dot product kernel using rapidly switched analog circuit
… this thesis, we present rapidly switched analog circuit (RSAC), a new circuit architecture, to implement an energy-efficient mixed-signal dot product (DP) kernel for machine learning and signal processing applications. RSAC operates by fast switching the analog inputs to the output via variable …
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Collective analog bioelectronic computation
… analog computation inspired by architectures in biology. The first example, an RF cochlea, maps the partial differential equations that describe fluid-membrane-hair-cell wave propagation in the biological cochlea to an equivalent inductor-capacitor-transistor integrated circuit. …
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Wideband direct conversion IQ modulators in indium phosphide DHBT technology
… has seen major benefits from custom integrated circuits in an indium phosphide double-heterojunction bipolar transistors (InP DHBT) (Low et al. 2005). The highest speed oscilloscopes that are currently available rely on InP DHBT circuits in their frontend and enable a combination of high …
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Single-site, noninvasive, blood pressure measurements at the ear using ballistocardiogram (BCG), and photoplethysmogram (PPG), and a low-power, reflectance-mode PPG SoC
… uses commercial components, a custom integrated circuit for reflectance-mode PPG is designed with the goal of removing static and time-varying interferers while minimizing power consumption and device size. The chip nominally consumes 425[mu]W and only requires LEDs and photodiodes to operate, …
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Fully integrated dc-dc converters with basic and double galvanic isolation
… function of a system, to preserve sensitive circuits from damages or to guarantee safety of human beings. In this context increasing levels of galvanic isolation have been defined by regional and international bodies. A fully integrated power transfer system with on-chip basic galvanic …
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Generation and tuning of learned sensorimotor behavior by multiple neural circuit architectures
… and tune these motor responses, and are certain circuit architectures, or connectivity patterns, optimally suited for certain sensorimotor applications? This thesis presents progress towards this particular problem in three subprojects. The first section re-analyzes a large data set of …
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Single-Stage Grid-Connected Multilevel Converters: Topologies and Control Strategies
… voltage-boosting feature, reduced number of circuit components, modular structure, and bidirectional operation is presented. The aforementioned advantages make this converter a suitable candidate for renewable energy applications. Moreover, to further improve the performance of the proposed …
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