Thesis (M.S.)--Carnegie-Mellon University, 1981. / Includes bibliographical references (p. 44).

This thesis presents the analysis and characterization of a low sensitivity dual feedback active RC bandpass filter. Chapter 2 details the analysis of the network and a method of simplifying the resultant transfer function by a single pole/zero cancellation. Chapter 3 characterizes the simplified transfer function through an analysis of the quality factor and of the center frequency gain as functions of the individual variables of the circuit. It also details sensitivity analyses of these characteristic quantities and a stability analysis. Lastly, chapter 3 presents graphical representations of the equations developed so that they can be used as design tools. It then goes through the details of applying these graphs to an example network. Chapter 4 explains the differences between experimental data and predicted data by discussing some of the nonlinearities neglected in the original analysis. Finally chapter 5 restates the design technique in light of the predominant nonlinearities.

A method and apparatus are presented for generating suppressed carrier digital clock signals. These clock signals have the advantage of being broad band in nature and thus exhibiting lower power spectral density. Structures or systems utilizing such clock signals would be less likely to create electromagnetic noise of sufficient intensity to interfere with radio frequency systems and services. The apparatus requires only digital logic devices, rather than the analog devices required for frequency- or phase-modulated spread spectrum clock generators. The method provides the opportunity to synchronously demodulate the clock, thus restoring the original narrow band clock signal where required. The apparatus was implemented in a programmable gate array using 20 MHz and 33.33 MHz fundamental clocks. Measurements of the resulting electronic spectra and clock jitter are reported. / Graduation date: 1999

In this dissertation, two important current mode circuit design subjects have been explored. In the first part, the switched-current circuit technique has been investigated. The fundamental performance and limitations of this technique are explored. One of the major limitations, the signal distortion caused by clock feedthrough has been substantially reduced by a newly developed clock feedthrough cancellation technique. In addition, a filter synthesis technique has been developed by directly simulating the structure of digital filter. Several experimental CMOS prototypes have been designed and fabricated. The measured frequency and phase responses demonstrated the feasibility of this synthesis technique. In the second part, a new logic family called current-steering logic has been developed. The fundamental performance and characteristics of this technique have been discussed including the basic inverter and NOR gate with DC analysis, transient analysis and power-delay product. It has been shown that the current-steering logic has, a much smaller current spike than conventional CMOS logic circuits, which is especially desirable in mixed-mode applications. Several experimental prototypes have verified the functionality and performance of this new technique. / Graduation date: 1991

With increasing interest in current-mode analogue processing due to its high performance properties such as speed, bandwidth and accuracy compared to voltage-mode processing, new current-mode alternatives to various conventional circuit designs are appearing. In this report, a novel circuit design to construct a fully-differential current-mode operational amplifier ( OP-AMP ) is suggested. A standard CMOS process and a 5 volt power supply are utilized. Simulation results using SPICE are presented. For the current-amplifier, a highly linear behavior ( THD 0.02% ) and an excellent frequency response ( 10 MHz ) were observed. Using this new differential OP-AMP topology, fully-differential switched-current delay cell and an integrator circuit were also developed successfully. / Graduation date: 1991

Thesis (M.S.)--California Polytechnic State University, 2010. / Mode of access: Internet. Title from PDF title page; viewed on Jan. 21, 2010. Major professor: John Oliver. "Presented to the Electrical Engineering Department faculty of California Polytechnic State University, San Luis Obispo." "In partial fulfillment of the requirements for the Master of Science degree in Electrical Engineering." "January 2010." Includes bibliographical references (p. 119-121).

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