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.
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Showing 1 to 20 of 47 for “"Digital Circuit"”.
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Analysis and optimization of digital circuit dynamic behavior
Very-large-scale-integration (VLSI) circuit design heavily relies on computer aided design (CAD) tools to synthesize and optimize the circuits targeting a cycle time tclk. To account for variations, this cycle time usually includes a conservative timing guardband to accommodate delay changes. With …
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Modeling and Simulation of High-Speed Digital Circuit Interconnections
… devices and the demand for smaller integrated circuits and packages have led to a high density of components and closely packed interconnects in both on-chip and off-chip levels. Size and spacing of interconnects have been dramatically reduced in recent years which have led to various …
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Low energy digital circuit design using sub-threshold operation
… made power management a significant concern for circuit designers. For emerging low power applications such as distributed micro-sensor networks or medical applications, low energy operation is the primary concern instead of speed, with the eventual goal of harvesting energy from the environment. …
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Investigation into digital circuit design with GaAs/Ga2O3 heterostructure MOSFETs
… are investigated as a potential technology for digital circuit design. The devices under investigation are 0.6 μm gate length, enhancement mode, heterostructure MOSFETs, with a high-κ dielectric (Ga2O3), and an InGaAs channel. Historically silicon CMOS technology has been the natural choice for …
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Modeling and design of DC power buses in high-speed digital circuit designs
… coefficients is developed for general media. A circuit extraction approach based on a mixed-potential integral equation formulation (CEMPIE) is further developed based on partial elements with normalized potential coefficients, to include vertical discontinuities and losses into the first …
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Characterization of Schottky barrier carbon nanotube transistors and their applications to digital circuit design
… The goal of the present work is to propose circuit models for carbon nanotube field effect transistors (CNTFETs) and apply them to aspects of digital circuit design. This research models the current voltage characteristics of CNTFETs below and above threshold. The current characteristics are …
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Asymptotic and absorbing boundary conditions for finite element analysis of digital circuit and scattering problems
… scattering as well as two- and three-dimensional digital circuit problems are presented. Numerical examples are shown for a variety of scatterers and transmission line configurations. Results show that the boundary condition concepts introduced in this work yield good agreement with work published …
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Analysis of MOS Current Mode Logic (MCML) and Implementation of MCML Standard Cell Library for Low-Noise Digital Circuit Design
<p>MOS current mode logic (MCML) offers low noise digital circuits that reduce noise that can cripple analog components in mixed-signal integrated circuits, when compared to CMOS digital circuits. An MCML standard cell library was developed for the Cadence Virtuoso Integrated Circuit (IC) design …
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High Temperature CMOS Silicon Carbide Asynchronous Circuit Design
<p>Designing a digital circuit to operate in an extreme temperature range is a challenge with increasing demand for a solution. Large variations in temperature have a distinct impact on electron mobilities causing substantial changes to the threshold voltage of the devices. These physical changes …
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Symbolic techniques for VLSI test and diagnosis
Many problems in the domain of digital circuit testing and diagnosis demand the processing of a large number of circuit configurations. Recently, due to the development of binary decision diagrams (BDDs), symbolic methods have become a practical means of handling the large sets encountered in these …
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Pattern-placement-error detection for spatial-phase-locked e-beam lithography (SPLEBL)
… for SPLEBL and how it could be implemented as a digital circuit. An error-detection algorithm, well suited for digital hardware, has been developed and characterized. A digital circuit design to implement the algorithm has been created, optimized, and verified using the MathWorks SimulinkTM and …
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Application of electromagnetic-bandgap structures to power distribution network design
… or ground plane, the performance of multilayer digital circuit boards can be enhanced with minimized electromagnetic interference. Both numerical and analytical validation are demonstrated to show the effectiveness of the new pattern implementation.
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Parallel algorithms for test generation and fault simulation
With increase in complexity of digital circuits, it has become extremely important to detect faults to ensure correct operation of a digital circuit. Since test generation and fault simulation for circuits of VLSI complexity can take a prohibitive amount of time, speeding up test generation and …
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Tutorial on designing and implementing a direct digital synthesizer (DDS) on a field programmable gate array (FPGA)
… One such a frequency synthesizer is a direct digital synthesizer (DDS). This thesis work utilizes a design that aims to combine digital circuit design and electronic communication knowledge, and apply them in a practical environment. It does so by providing a tutorial on designing and …
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Design and prototype of an all digital system for baseband FM multiplex signal demodulation
… densities and operation frequencies of digital circuits is leading to the replacement of many analog circuits by their digital circuit counterparts. This trend can be attributed to the flexibility and robustness provided by digital circuits over analog circuits. One application in which …
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Variation Tolerant Energy Efficient Design For Ultra Low Voltage Digital Circuits
… consumption and limit the power dissipation of a circuit, supply voltage should be scaled continually. Threshold voltage should also be reduced to sustain performance and reliability. This scaling of supply and threshold voltage imposes several bottlenecks in ultra-low voltage circuit design. One …
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Optical SNS folding circuit design
… optical multi-interferometer analog-to-digital converter (ADC). These types of ADCs can directly digitize the signals from an antenna and play an important role in eliminating the need for intermediate frequency and baseband processing. With resolution greater than 12 bits, these types …
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A meta-language for functional verification
… simulation is difficult with existing tools for digital circuit verification because stimuli generation, simulation execution, and analysis of simulation results are all decoupled. A new programming language to address this problem, analogous to the mechanism for orchestrating proof search …
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Superconducting nanowire electronics for alternative computing
… that have recently inspired their use in digital circuit applications for amplification, addressing, and memory. Here, I take advantage of the electrothermal feedback that occurs in resistively shunted nanowires to develop two new technologies: (1) A multilevel memory cell made by …
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Enhancing Productivity with Back-End Similarity Matching of Digital Circuits for IP Reuse
Productivity for digital circuit design is being outpaced currently by the rate at which<br />silicon is growing such as FPGAs. Complex designs take a large amount of engineering<br />hours to complete. Reuse of existing design can potentially decrease this cost and increase<br />design …
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