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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
201

Inter-pulse interval based mixed signal representations/

Ravi, Sanjay. January 2008 (has links)
Thesis (Ph. D.)--Oregon Health & Science University, Department of Science & Engineering, December 2008. / Includes bibliographical references (leaves 130 - 136).
202

Computer control of a pulse width modulated AC/DC converter under a variable frequency power supply

Singh, Gunjan. January 1993 (has links)
Thesis (M.S.)--Ohio University, November, 1993. / Title from PDF t.p.
203

Pulse propagation of sound, light, and electrons

Hilbert, Shawn A. January 2009 (has links)
Thesis (Ph.D.)--University of Nebraska-Lincoln, 2009. / Title from title screen (site viewed June 26, 2009). PDF text: xiii, 178 p. : ill. ; 10 Mb. UMI publication number: AAT 3350448 . Includes bibliographical references. Also available in microfilm and microfiche formats.
204

Importance sampling simulation of free-space optical APD pulse position modulation receivers /

Baker, Kenneth R, January 1993 (has links)
Thesis (Ph. D.)--Virginia Polytechnic Institute and State University, 1993. / Vita. Abstract. Includes bibliographical references (leaves 229-237). Also available via the Internet.
205

A pulse modulator that can be used as an amplifier, a multiplier, or a divider

Rosenthal, Jerome A. January 1963 (has links)
Thesis (M.S.)--University of California, Berkeley, 1963. / "UC-37 Instruments" -t.p. "TID-4500 (19th Ed.)" -t.p. Includes bibliographical references (p. 50).
206

Implementation of an ultra-wideband transceiver for sensor applications /

Jann, Benjamin J. January 1900 (has links)
Thesis (M.S.)--Oregon State University, 2006. / Printout. Includes bibliographical references (leaves 49-50). Also available on the World Wide Web.
207

A comparative study of lowpass continuous-time [delta-sigma] modulators with pulse-shaped DACs /

Fang, Jie. January 1900 (has links)
Thesis (M.S.)--Oregon State University, 2006. / Printout. Includes bibliographical references (leaves 55-58). Also available on the World Wide Web.
208

[Sigma Delta] Quantization with the hexagon norm in C /

Zichy, Michael Andrew. January 2006 (has links) (PDF)
Thesis (M.A.)--University of North Carolina at Wilmington, 2006. / Includes bibliographical references (leaf: [41])
209

High spatial and spectral quality diode-laser-based pump sources for solid-state lasers and optical parametric oscillators

Lindsay, Ian D. January 1999 (has links)
In this thesis the use of high spatial- and spectral-quality diode-laser pump sources for solid-state lasers and continuous-wave optical parametric oscillators (cw OPOs) is investigated. While diode lasers are potentially attractive, compact, low-cost pump sources for solid-state lasers and cw OPOs, the difficulty in obtaining moderate output powers, while retaining high spatial beam quality and spectral purity, often limits the potential of such lasers in these applications. Techniques for obtaining high-power, high spatial- and spectral-quality output from diode lasers are reviewed and the design, development and characterisation of an injection-locked broad-area diode-laser system is described. This system produced output powers of &ap;400mW in a near-diffraction-limited beam (M2&ap;w1.3) and with a spectral width of < 30MHz. The injection-locked system was used as the pump source for a quasi-three-level 946-nm Nd:YAG laser. End-pumped solid-state lasers of this type can offer potentially efficient, low-threshold operation if a near-diffraction limited pump source is used allowing optimal overlap with the laser mode. A model, including pump beam quality effects, is developed for such lasers and used to highlight the advantages of a near- diffraction-limited pump source, especially in the case of the 946-nm Nd:YAG transition which suffers from low gain and significant reabsorption losses. A 946-nm Nd: YAG laser pumped by the injection-locked system is described, yielding cw output powers up to 120mW with a 46% slope efficiency, performance comparable to Ti:sapphire- or dye-laser pumping, and 27ns Q-switched pulses having peak powers of 180W. 50W, 20ns pulses at 473nm were obtained by second-harmonic generation in KNbOs. The performance and relative merits of various cw OPO configurations, in the context of diode-laser pumping, are discussed and the development of a doubly- resonant OPO (DRO) based on periodically-poled lithium niobate is described. When pumped by the injection-locked system, this device showed a threshold of 25mW and .tuning of the outputs over 1.15- 1.25 mum at the signal and 2.3-2.65 mum at the idler was obtained by variation of crystal temperature, PPLN grating period and pump wavelength. When pumping with a 100mW single-mode diode laser, a 15mW OPO threshold was observed while retaining a similar tuning range. This represented the first demonstration of a cw DRO directly pumped by a single-mode diode laser. The achievement of such spectral coverage while pumping with this source points to the potential of such systems as compact, tunable sources in the near-to mid-infrared.
210

RADIATION INDUCED TRANSIENT PULSE PROPAGATION USING THE WEIBULL DISTRIBUTION FUNCTION

Watkins, Adam Christopher 01 May 2012 (has links)
In recent years, studying soft errors has become an issue of greater importance. There have been many methods developed that estimate the Soft Error Rate. Those methods are either deterministic or statistical. The proposed deterministic model aims to improve Soft Error Rate estimation by accurately approximating the generated pulse and all subsequent pulses. The generated pulse is approximated by a piecewise function consisting of two Weibull cumulative distribution functions. This method is an improvement over existing methods as it offers high accuracy while requiring less pre-characterization. The proposed algorithm reduces pre-characterization by allowing the beta Weibull parameter to be calculated during runtime using gate parameters such as the gate delay.

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