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 30 for “"Cmos Processes"”.
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Analysis of polysilicon critical dimension variation for submicron CMOS processes
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1994.
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Monolithic electronic-photonic integration in state-of-the-art CMOS processes
As silicon CMOS transistors have scaled, increasing the density and energy efficiency of computation on a single chip, the off-chip communication link to memory has emerged as the major bottleneck within modern processors. Photonic devices promise to break this bottleneck with superior …
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A compact model for silicon controlled rectifiers in low voltage CMOS processes
This thesis presents an SCR compact model for simulating ESD protection circuits. The aspects of the compact model that are necessary to reproduce measurement data, such as quasi-static I-V curves and transient voltage overshoot, are discussed. These aspects include conductivity modulation of the …
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Integrated optical quantum manipulation and measurement of trapped ions
… in complementary metal-oxide-semiconductor (CMOS) processes. We show in addition that the multiple patternable metal layers present in CMOS processes can be used to create complex planar ion traps with performance comparable to simple single-layer traps, and that CMOS silicon avalanche …
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High performance zero-crossing based pipelined analog-to-digtal converters
As CMOS processes continue to scale to smaller dimensions, the increased fT of the devices and smaller parasitic capacitance allow for more power ecient and faster digital circuits to be made. But at the same time, output impedance of transistors has gone down, as have the power supply voltages, …
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High-Speed, High-Precision Digital -Analog Converters Designed for Spectral Performance
… of chips have been realized in conventional CMOS processes to attain this goal. These chips share the common architectural feature of utilizing novel output stages coupled to a current-switching DAC to extract a high-linearity signal from the current- switched output. Provision is also made …
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Methods for compact modeling of process variations in silicon photonics devices
… are being developed with extensions to existing CMOS processes, and are growing in complexity. Silicon photonics designs are evaluated in simulation using similar methods to those used for CMOS transistor and circuit designs; simulation models for common silicon-based photonics structures and …
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Hybrid laser with CMOS photonics
… the challenges of integrating gain mediums into CMOS processes, allowing for lasing at virtually arbitrary wavelengths, the possibility of multiwavelength operation with a shared gain medium, elimination of closed-loop control of wavelength tuning, ability to control laser output and wavelength …
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Digital ADCs and ultra-wideband RF circuits for energy constrained wireless applications by Denis Clarke Daly.
… voltage headrooms associated with advanced CMOS processes. This thesis presents several highly digital, mixed-signal circuits and architectures designed for energy constrained wireless applications. First, as a case study, a highly digital, voltage scalable flash ADC is presented. The flash …
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Energy processing circuits for low-power applications
… switched capacitor DC-DC converters in digital CMOS processes. The converters are designed to deliver regulated scalable load voltages from 0.3V up to the battery voltage of 1.2V for ultra-dynamic voltage scaled systems. The efficiency limiting mechanisms of these on-chip DC-DC converters are …
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Compact modelling in RF CMOS technology
… of complementary metal-oxide-semiconductor (CMOS) technology, the RF performance of metal-oxide-semiconductor field transistors (MOSFETs) has considerably improved over the past years. Today, the standard CMOS technology has become a popular choice for realizing radio frequency (RF) …
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Material and device aspects of semiconducting two-dimensional crystals
… in addition to compatibility with silicon CMOS processes.^ In this thesis, the fundamental device implications of using semiconducting 2D crystals are investigated. This includes: 1) the optimization of device fabrication processing for better device performance, 2) comparing the device …
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CMOS design enhancement techniques for RF receivers. Analysis, design and implementation of RF receivers with component enhancement and component reduction for improved sensitivity and reduced cost, using CMOS technology.
Silicon CMOS Technology is now the preferred process for low power wireless communication devices, although currently much noisier and slower than comparable processes such as SiGe Bipolar and GaAs technologies. However, due to ever-reducing gate sizes and correspondingly higher speeds, higher Ft …
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Equation-based hierarchical optimization of a pipeline ADC
… strategy suitable for design in deeply scaled CMOS processes. Because it is a hierarchical methodology, it scales gracefully to systems that are much larger than can be handled by known optimization methods. This thesis matches flat and hierarchical optimizations of a 10-stage pipeline ADC in a …
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A study of CMOS technologies for image sensor applications
CMOS (Complementary Metal-Oxide-Silicon) imager technology, as compared with mature CCD (Charge-Coupled Device) imager technology, has the advantages of higher circuit integration, lower power consumption, and potentially lower price. The advantages make this technology competent for the …
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Resonant photonic crystal photodetectors for the infrared in silicon
… and waveguides fabricated within the same CMOS environments as the electronics. This thesis centers on developing photodetectors for infrared light within the silicon of commercial CMOS processes; silicon's lack of strong absorption at the wavelengths of interest makes this challenging. The …
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Noise shaping techniques for analog and time to digital converters using voltage controlled oscillators
Advanced CMOS processes offer very fast switching speed and high transistor density that can be utilized to implement analog signal processing functions in interesting and unconventional ways, for example by leveraging time as a signal domain. In this context, voltage controlled ring oscillators …
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CMOS current amplifiers : speed versus nonlinearity
… circuits are analysed and realised using modern CMOS integration technologies. The dynamic nonlinearities of these circuits are discussed in detail as in the literature only linear nonidealities and static nonlinearities are conventionally considered. For the most important open-loop current-mode …
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Flexible Mems: A Novel Technology To Fabricate Flexible Sensors And Electronics
… Systems) devices.</p> <p> MEMS devices and CMOS(Complementary Metal-Oxide-Semiconductor) circuits are traditionally fabricated on rigid substrates with inorganic semiconductor materials such as Silicon. However, it is highly desirable that functional elements like sensors, actuators or micro …
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Photonic neural networks for signal equalization in optical fiber transmission
… photonic platform, thus compatible with standard CMOS processes for reduced unit cost in mass production. Its small footprint makes it suitable for scalability and integration in the next-generation transceivers. This design is experimentally tested against Chromatic Dispersion and Self-Phase …
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