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 44 for “"Ring Oscillator"”.
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Ring oscillator based injection locked clock multiplier
This thesis describes a ring-based injection locked clock multiplier (ILCM) designed with the goal of generating a high-frequency and low-jitter clock. Building on prior research done on injection locking, this design uses a reference frequency doubling technique to push the noise bandwidth of the …
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A ring oscillator based variation test chip
… of Technology, Dept. of Electrical Engineering and Computer Science, 2002.
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A low phase noise ring oscillator phase-locked loop for wireless applications
… circuit level design of a 900MHz [Sigma][Detta] ring oscillator based phase-locked loop using 0.35[mu]m technology. Multiple phase noise theories are considered giving insight into low phase-noise voltage controlled oscillator design. The circuit utilizes a fully symmetric differential voltage …
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Time-based circuits for communication systems in advanced CMOS technology
… the time domain. In this thesis, we focus on a ring oscillator as a core time-based circuit for communication systems. Ring oscillators are employed in analog-to-time conversion or time-to-digital conversion. In this work, we present A/D converters and an RF modulator based on ring oscillators …
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Predicting CMOS Hot Carrier Degradation in VLSI Circuits
Reliability simulation of a 51-stage ring-oscillator was performed. The circuit lifetime improvement due to D2 anneal can be well estimated by the device dc lifetime improvement data.
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Design of an Ultra-Wideband Frequency-Modulated Continuous Wave Short Range Radar System for Extending Independent Living
… can provide immediate assistance by monitoring and detecting fall events. The unique characteristics of this system allow for a frequency-based modulation system to carry out triangulation and sense the location of the fall through the usage of a continuous chirp signal that linearly sweeps …
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Design and analysis of high performance low noise oscillators and phase lock loops
… circuits – the VCO and PLL.<br/><br/>An improved ring oscillator topology is proposed which has the advantage of an ultra wide tuning range. A novel noise aware ring oscillator model is also proposed which links the noise performance of the oscillator to its transistor dimensions giving insight to …
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Design techniques for temperature insensitive, low phase noise oscillator
… thesis proposes a way of combining two major oscillator types available in CMOS (RC and Ring) technology, while preserving the unique qualities of both of them and coming up with the proposed RCR (resistor-capacitor-ring) oscillator, that o ffers an excellent alternative for biomedical devices …
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Design and implementation of three-dimensional logic structures
… thesis, the software tools are used to design a ring oscillator, a 3-D static RAM, and a 3-D cellular automata machine.
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Low jitter phase-locked loop clock synthesis with wide locking range
… VCO with very low phase noise performance. The ring oscillator VCOs based on differential delay cell chains have been used successfully in communications applications, but thermal noise induced phase noise have to be minimized in order not to limit their applicability to some applications which …
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Clock multiplication techniques for high-speed I/Os
… a large loop filter capacitor and power hungry oscillator. Digital PLLs can help reduce area but their jitter performance is severely degraded by quantization error. In this dissertation different clock multiplication techniques have been explored that can be suitable for high-speed wireline …
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Design of fully digital inductors for low bandwidth filter applications
… machines, where we are interested in acquiring data and making decisions all from some sort of embedded environment. Of particular value are personal health metrics, such as the analysis of heart rate, muscle action potentials, and brain waves. Collecting this data requires new advances in …
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Towards in-situ device fabrication : electrostatic lithography and nanowire field effect devices
… vapor deposition. Field effect transistor and ring oscillator architectures were fabricated using this process. Nanowires were characterized using scanning electron microscopy and transmission electron microscopy. Current-voltage measurements were performed on the nanowire field effect …
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GaN electronics for high-temperature applications
… inverters, NAND gate, NOR gate, SRAM, and ring oscillator, have been demonstrated and characterized at both room temperature and high temperature.
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Experimental Analysis on Aging of Integrated Circuits
… study the impact of aging effects on different ring oscillator chains. Key contribution of this thesis includes extracting the real silicon data from the 90nm test chips by designing a test board, separating HCI and NBTI effects by developing novel mathematical model and performing detailed …
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Energy-efficient wireline transceivers
… and communication systems. Apart from transferring a wide range of data rates to satisfy the interconnect bandwidth requirement, the transceivers have very tight power budget and are expected to be fully integrated. This thesis explores enabling techniques to implement such transceivers in both …
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Systems and circuits for broadband contactless and wireline transceivers
… The most effective solution for transferring these large volumes of data is broadband wireline communication systems. They cover a wide range of applications across all scales, from supercomputing devices in data centers to mobile consumer devices. Advancements in circuit design and …
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Microfluidic bubble logic
… as a scheme for material manipulation. Bringing together notions from computer science and fluid dynamics, I present a new logic family "Bubble Logic" capable of both universal computation and programmable material manipulation in an all-fluidic two-phase system. This removes the …
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Study of Physical Unclonable Functions at Low Voltage on FPGA
… this thesis, we explore the behavior of RO-PUF (Ring Oscillator Physical Unclonable Functions) on FPGA when subjected to low voltages. We investigate its stability by applying environmental variations, such as temperature changes to characterize its effectiveness. It is shown with the help of …
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Spectrum monitor for cognitive radio
… receiver design is to draw a spectrum map covering a wide range of frequency that is fast and accurate enough while consuming low power compared with the main transceiver circuits. The history and applications of the concept of cognitive radio (CR) are overviewed, followed by a wideband …
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