Global ETD Search

101	Limitation of Q-factor of second-order active filter using finite gain operational amplifiers. Chiu, Pui-leung, January 1975 (has links) Thesis--M. Phil., University of Hong Kong.
102	Synthesis of active RC bandpass filters using frequency-independent transformation / Ho, Kwok-choi. January 1900 (has links) Thesis--M. Phil., University of Hong Kong, 1980. Electric filters, Bandpass
103	New design methods for two-dimensional circularly symmetric digital filters / Chan, Chun-leung. January 1988 (has links) Thesis (Ph. D.)--University of Hong Kong, 1988. Electric filters, Digital.
104	Study on candle filter surface regeneration characteristics at room temperature Vasudevan, Venkatesh, January 2003 (has links) Thesis (M.S.)--West Virginia University, 2003. / Title from document title page. Document formatted into pages; contains xxiii, 271 p. : ill. (some col.). Vita. Includes abstract. Includes bibliographical references (p. 268-271).
105	Spectral characterisation of infrared optical materials and filters Hawkins, Gary J. January 1998 (has links) The optical and semiconductor properties of the materials used in the design and manufacture of infrared interference filters play a vital role in defining the spectral performance achievable from a multilayer filter design. This thesis examines the theoretical basis of the behaviour of absorptive and dispersive mechanisms in optical materials and derives methods of determining values for their complex optical constants. By applying these properties to the multilayer filter design, a predictive model for the filter performance has been constructed to determine if a chosen design can achieve the specified spectral performance requirements, prior to manufacture. Examples are given demonstrating the convergence of prediction with practice. This predictive model approach has then been expanded to develop a method for determining the spectral design requirements for the individual filters and coatings integrated into an atmospheric radiometer instrument. This process uses an integrated systems approach, by which the characteristics of all the contributing elements provide a predicted spectral model of the instrument. By then applying reverse synthesis to this model, the particular spectral requirements of the individual filters can be determined. Examples are given of particular spectral design requirements for filters derived using this method. The effects of the space environment on the spectral and physical properties of infrared filters and materials is also presented. This includes a description of the radiation environments to which filters are subjected in low Earth orbit. A quantitative analysis of the effects of this environment on the spectral characteristics of exposed filters and materials is made, together with an assessment of the physical degradation mechanisms that affect filter performance. 535 Infrared interference filters
106	On the design of multiplier-less perfect reconstruction filter banks using genetic algorithm and sum-of-powers-of-two representation Liu, Wei, 劉偉 January 2000 (has links) published_or_final_version / Electrical and Electronic Engineering / Master / Master of Philosophy Light filters. Genetic algorithms.
107	Synthesis and sensitivity analysis of elliptic networks Baez Lopez, David Jose Miguel January 1979 (has links) No description available. Electric filters. Electric networks.
108	FILTRATION OF CHARGED PARTICLES IN AN ELECTRICAL FIELD Cooper, Fredrick Christian, 1940- January 1967 (has links) No description available. Electrophoresis. Filters and filtration.
109	ULTRAVIOLET INTERFERENCE FILTERS WITH METAL-DIELECTRIC STACKS McKenney, Dean B. January 1969 (has links) No description available. Light filters. Ultraviolet radiation.
110	MONOLITHIC HIGH Q BAND-PASS FILTERS EMPLOYING ELECTRO-THERMAL CIRCUITS Friedman, Miles Franklin, 1930- January 1969 (has links) No description available. Electronic circuits. Electric filters.

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