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 46 for “"digital-to-analog converter"”.
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Radio frequency digital to analog converter
… performance of high speed, high resolution digital-to-analog converters (DACs) is limited by distortion at the data switching instants. Inter-symbol interference (ISI), imperfect timing synchronization and clock jitter are all culprits. A DAC output current controlled by an oscillating …
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Digital to Analog Converter Design using Single Electron Transistors
… of Moore's law. But all good things must come to an end. Researchers estimate that CMOS will reach a lower limit on feature size within the next 10 to 15 years. In order to assure further progress in the field, new computing architectures must be investigated. These nanoscale architectures are …
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A Reconfigurable Digital-to-Analog Converter with Supply Invariant Linearity
<p>A novel reconfigurable digital-to-analog converter (DAC) with supply independent linearity is presented. The process agnostic converter achieves wide supply range operation and re-configurability by being charge based. This converter consists of a 7-bit parallel digital input control core and an …
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Low-power amplifier chopper stabilization for a digital-to-analog converter
… and low-noise performance from the internal digital-to-analog converter. CMOS design has allowed for oversampling sigma-delta modulation to achieve these goals. However, noise is typically limited by the kT/C noise in the switched capacitor filter following the digital modulation. These …
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Analysis of R-2R digital-to-analog converter with equal current switching
Analysis and performance tradeoffs of an R-2R digital-to-analog converter with equal current switching are presented. It is shown that for such architecture, the active area of the DAC grows as the resolution increases due to higher matching requirement needed. A fully binary-weighted DAC suffers …
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Signal generation and evaluation using Digital-to-Analog Converter and Signal Defined Radio
In contemporary communication systems, Digital-to-Analog Converters (DAC), Signal Defined Radio (SDR) signal creation, and clock data recovery are essential components. DACs convert digital signals to analog signals, creating continuous waveforms. DACs provide versatility in the transmission of SDR …
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1-Gs/s, 14-Bit Digital -to -Analog Converter and Track -and -Hold Amplifier
… THA employs an open-loop linearization technique to reduce distortion and increase bandwidth. The hold-mode feedthrough is reduced by the replica switch technique. The parasitic capacitance compensation technique is employed to further improve the signal bandwidth of the THA. Simulation results …
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1-Gs/s, 12-Bit High-Performance Silicon-Germanium BiCMOS Digital-to-Analog Converter
… important considerations in current-steering D/A converter design is the current mismatch issue in the current-cell array. In this case, one should compensate the current mismatch issue. The proposed calibration approach significantly enhances static and dynamic linearities.
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Linearity and monotonicity of a 10-bit, 125 MHz, segmented current steering digital to analog converter
The purpose of this research is to determine the linearity and monotonicity of the THS5651IDW digital to analog converter (DAC), a prototype of the future Texas Instruments TLV5651, 10-bit, 125 MHz communication DAC. Testing was conducted at the Texas Instruments facility on Forest Lane, Dallas, …
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A 12-bit 500 MHz GaAs MESFET digital-to-analog converter with p+ ohmic contact isolation
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1992.
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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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Construction of a random signal with a specific Psd and a uniform Pdf
… of a dynamic element matching (DEM) flash digital to analog converter (DAC) can be improved by controlling the DEM DAC's interconnection network with a random signal that has a specific power spectral density (PSD) and a uniform probability distribution function (PDF). Many algorithms exist …
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An optical-electrical sub-sampling down-conversion receiver with continuous-time [Sigma] [Delta] modulation
… continuous-time (CT) [Sigma] [Delta] analog- to-digital converter (ADC). Here, photodiodes and low-jitter pulses from the mode- locked-laser are leveraged to perform signal clocking and quantizer pre-amplification, overcoming digital-to-analog converter (DAC) clock jitter and quantizer …
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Shuttling of ions for characterization of a microfabricated ion trap
… for shuttling. Next, the characteristics of a digital-to-analog converter (DAC) are calibrated, and this instrument is integrated into trapping experiments to test the viability of the analytic model. Combining theory with the capabilities of the DAC, I calculate that the new experimental …
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The oscillogenic control algorithm
… K. Mercure was used as a model for translation into a software-based control algoritnm. The oscillogenic instrument, invented by P. R. Rony and P. K. Mercure, uses a feedback element (the oscillogenic controller) and a sensor component to produces a periodic signal yielding information about the …
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Low-Power System Design for Impedance-Based Structural Health Monitoring
… and aging structures. A structural health monitoring (SHM) system intends to identify damage on the structure under monitoring, so that necessary action can be taken in advance to avoid catastrophic results. Impedance-based SHM utilizes a piezoelectric ceramic as a collocated actuator and …
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Dynamic Element Matching Techniques For Delta-Sigma ADCs With Large Internal Quantizers
… internal quantizer resolution in delta-sigma analog-to-digital converters. Increasing the quantizer resolution in a delta-sigma modulator can increase SNR, improve stability and reduce integrator power consumption. However, each added bit of quantizer resolution also causes an exponential …
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A broadband Microwave Transceiver Front-end for an Airborne Software Defined Radio Experiment
… simulation, construction, and test of a wideband analog transceiver front-end for use in an airborne software defined radio (SDR) experiment. The transceiver must operate in the GSM-1800 and IEEE 802.11b/g WiFi frequency bands and accommodate beamforming. It consists of a transmitter and dual band …
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A highly digital, reconfigurable and voltage scalable SAR ADC
… include military surveillance, environmental monitoring, chemical detection and more recently, medical monitoring systems. Each node of the sensor network requires energy efficient circuits powered off small batteries or harvested energy. In such systems, a single reconfigurable analog-to-digital …
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