Thesis (M.S.)--Oregon State University, 2009. / Printout. Includes bibliographical references (leaf 31). Also available on the World Wide Web.

Thesis (Ph. D.)--University of Texas at Austin, 2008. / Vita. Includes bibliographical references.

Thesis (Ph. D.)--Electrical and Computer Engineering, Georgia Institute of Technology, 2006. / Mooney, Vincent J., Committee Chair ; Chatterjee, Abhijit, Committee Member ; Hasler, Paul, Committee Member ; Dorsey, John, Committee Member ; Niemier, Michael, Committee Member.

This dissertation investigates the constraints which arise when switched-capacitor (SC) delta-sigma modulators are designed for low-voltage operation, targeting also low power dissipation, and proposes methods of improving the performance and optimizing for low power dissipation. This is accomplished by identifying critical elements whose performance can lead to increased power dissipation, as well as the fundamental limitations of available analog circuit techniques. A prototype was designed and fabricated, which reflected these findings, and therefore exhibited good performance and nearly optimum power dissipation. One of the key performance parameters is the dc gain of the amplifier in the first stage; it should be high. This is necessary for high linearity and low quantization noise leakage. In low-voltage operation, it may become impractical to use conventional topologies employing cascoding techniques (e.g., folded-cascode) which provide high gain in one single stage. Rather, cascaded structures have to be used. The disadvantage of the latter is the necessity for frequency compensation which results in increased power dissipation. Hence, another objective of this work is to exploit techniques which compensate for the open-loop gain characteristic of the amplifier (dc gain and nonlinearity), thus permitting the utilization of single-stage low-gain topologies. Predictive correlated double sampling is one of such techniques and is analyzed in detail. / Graduation date: 1998

Thesis (M.S.)--Worcester Polytechnic Institute. / Keywords: Biome, pulse oximeter, wearable sensors, telemedicine. Includes bibliographical references (leaves 115-119 ).

In this thesis, a novel low-voltage, highly linear and tunable triode transconductor is introduced. The proposed transconductor with new structure is based on constant drain-source voltage method to operate at low-voltage. The proposed transconductor achieves wide linear input range up to 1.5V at 1.8V supply voltage and the total harmonic distortion is -61dB at 0.7Vpp. The design uses TSMC 0.18£gm CMOS technology and supply voltage as low as 1.6V. Moreover, it possesses large transconductance tuning range from 220£gS to 869£gS and also keeps the wide linear input range.

Thesis (Ph. D.)--University of Missouri-Columbia, 2003. / Typescript. Vita. Includes bibliographical references (leaves 111-118). Also available on the Internet.

Thesis (Ph. D.)--University of Missouri-Columbia, 2003. / Typescript. Vita. Includes bibliographical references (leaves 111-118). Also available on the Internet.

Thesis (Ph. D.)--Brigham Young University. Dept. of Electrical and Computer Engineering, 2007. / Includes bibliographical references (p. 117-121).

Thesis (Ph. D.)--University of Texas at Austin, 2008. / Vita. Includes bibliographical references.