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 13 of 13 for “"Current steering"”.
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Current steering and electrode spanning with partial tripolar stimulation mode in cochlear implants
… number of implanted electrodes and the large current spread of electric stimulation. Although current spread may be reduced using partial tripolar (pTP) stimulation mode, the number of electrodes may not be sufficient to preserve fine spectral details. Here, we propose to introduce current …
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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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1-Gs/s, 12-Bit High-Performance Silicon-Germanium BiCMOS Digital-to-Analog Converter
… One of the most 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 improvement technique for CMOS continuous-time filters
… using a combination of passive resistors and current-steering MOS transistors as a variable resistance element is applied in the implementation of low-distortion continuous-time filters in complementary metal-oxide-semiconductor (CMOS) technology. This work is motivated by the fact that to …
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Quantifying the pathways modulated by deep brain stimulation for essential tremor using computational modeling
… modeling framework for comparing the current steering abilities of the clinical Medtronic 3389 DBS lead to a novel DBS lead with directionally-oriented electrodes (dDBS). We developed patient-specific computational neuron models from three ET patients implanted with a Medtronic 3389 …
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PLL-based active optical clock distribution
… for logic propagation. Processor designers currently employ several types of electrical deskew mechanisms to combat this problem in order to delay the inevitable need for more radical clocking solutions. Optical clock distribution has the potential to deliver extremely high precision global …
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Digital to Analog Converter Design using Single Electron Transistors
… in CMOS. The second two designs are based on a current steering architecture, but are unique in their implementation with SETs.
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Phase manipulation for efficient radio frequency transmission
… phase modulator is introduced that uses a single current-steering digital to analog converter (DAC) structure and discrete clock prerotation. This topology takes advantage of specifications particular to outphasing architectures to reduce matching requirements as compared to a two-DAC phase …
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BiCMOS technology and some applications in high performance arithmetic structures.
… is given. Without these advanced techniques the current level of BiCMOS and CMOS process performance would be unattainable. Examples of such include trench isolation, lightly doped drain structures, and advanced metallization techniques. Additionally, BATMOS, Northern Telecom's BiCMOS process …
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Precision hybrid pipelined ADC
… been proposed that replaces the amplifier with a current source and a comparator. The technique has been generalized to zero-crossing based circuits (ZCBC). It has been demonstrated but not limited to single-ended and differential pipelined ADCs, with effective number of bits (ENOB) ranging from 8 …
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Restoring Upper Extremity Mobility through Functional Neuromuscular Stimulation using Macro Sieve Electrodes
<p>The last decade has seen the advent of brain computer interfaces able to extract precise motor intentions from cortical activity of human subjects. It is possible to convert captured motor intentions into movement through coordinated, artificially induced, neuromuscular stimulation using …
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Continuous-Time Delta-Sigma Modulators for Wireless Communication
… DAC of the DSM, caused by Vth mismatch in the current-switching (differential) pair of a current-steering DAC. A model is developed to study return-to-zero (RZ) and non-return-to-zero (NRZ) feedback DACs, with and without data-weighted averaging (DWA), where an RZ DAC with DWA recovers the …