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 20 of 97 for “"gain control"”.
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Automatic gain control of transistor amplifiers
… Just such a design, that of obtaining automatic gain control of a transistor amplifier. There has been as yet little published about this difficult problem, and much of the work here presented is believed to be original*
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Interocular suppression and contrast gain control in human vision
The human visual system combines contrast information from the two eyes to produce a single cyclopean representation of the external world. This task requires both summation of congruent images and inhibition of incongruent images across the eyes. These processes were explored psychophysically …
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Interocular suppression and contrast gain control in human vision
The human visual system combines contrast information from the two eyes to produce a single cyclopean representation of the external world. This task requires both summation of congruent images and inhibition of incongruent images across the eyes. These processes were explored psychophysically …
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Automatic gain control for a small portable ultrasound device
Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2001.
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An implementation of an AMPS digital base station with adaptive Automatic Gain Control
… uniform and symmetric quantizer, optimal gain factors are computed for uniformly-, sinusoidally- and normally-distributed input signals. These gain factors maximize the quantizer's Signal-to-Quantization Noise Ratio (SQNR) in a mean-square sense. Together, these techniques can be used to …
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An adaptive antenna integrated with automatic gain control for a receiver front end
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1997.
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Speech filtering for improving intelligibility in noisy transients
… those with profound or total hearing loss to regain some hearing by stimulating auditory nerve fibers with implanted electrodes, in response to sound picked up by an external microphone. The signal processing chain from microphone input to stimulation output is an important factor in the overall …
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Design of a High Temperature GaN-Based Variable Gain Amplifier for Downhole Communications
… of an intermediate frequency (IF) variable gain amplifier (VGA) for downhole communications, which can operate up to an ambient temperature of 230 °C. The proposed VGA is designed using 0.25 μm GaN on SiC high electron mobility transistor (HEMT) technology. Measured results at 230 °C show …
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Temperature control strategies for radiant floor heating systems
… a radiant floor heating (RFH) system useful for control analysis is developed. The overall model consists of a boiler, an embedded tube floor slab and building enclosure. The overall model was described by nonlinear differential equations, which were solved using finite numerical methods. The …
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Eliza Haywood's Feigning Femmes Fatale: Desirous and Deceptive Women in "Fantomina," <em>Love in Excess</em>, and <em>The History of Miss Betsy Thoughtless</em>.
… used by female characters as a means by which to gain control or power. More specifically, Haywood's female characters often misrepresent themselves as a means by which to achieve sexual power and even to obtain sexual gratification.</p> <p>Haywood also explores the theme of women's uses of …
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The effect of voter control on public policy
… do, there is still limited evidence that voter control affects policy. In this dissertation, I provide three empirical tests of the claim that voter control institutions matter for public policy. The first empirical chapter examines what happens when voters lose control over property tax policy …
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Chopper stabilization in analog multipliers
… such as filters, neural networks, automatic gain control circuits, and phase alignment systems. As with any circuit, analog multipliers are plagued by DC offsets. When considering techniques for removing this offset, the question of continuous regulation versus calibration arises. We can …
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Vector modulators for analog-beamforming receivers
… combining. These VMs require accurate phase and gain control and high DR to achieve accurate beamforming and avoid corruption of the desired signal by blockers. At the same time, degrading transistor amplification characteristics and low supply voltages at deeply scaled CMOS nodes limit the …
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Gulbuddin Hekmatyar : Afghanistan's persistent insurgent
… environments in South Asia, if not the world. Against this backdrop, Islamic fundamentalist Gulbuddin Hekmatyar has waged a continuous guerilla war to gain control of the state. Towards this end, he has fought ambitious rivals, every Afghan government, the Soviet Union, and now US forces sent to …
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A new approach to dynamic range enhancement
… The DRET has several advantages over automatic gain control (AGC) including stability and the absence of parasitic modulation on weak signals caused by fading or transient high power signals.
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An airborne X-band synthetic aperture radar receiver design and implementation
… then to a 1st IF of 158 MHz. A sensitivity time control (STC) is implemented in the receiver to cater for the limited dynamic range of the ADC. The power return varies with range and hence, time. Thus, an STC will correct for low return power, at far range, by boosting the received signal and …
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Tunnel filters and optical amplifiers for use in fiber optic communication systems
… the receiver sensitivity and the total system gain. The effects of optical amplifier gain and bandwidth on those parameters are studied. Finally, the effects of gain variations are considered. It is shown that gain control gives very poor results, whereas power control does not severely limit …
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Milneburg, New Orleans: An Anthropological History of a Troubled Neighborhood
… Association in order to define its boundaries, gain control of its redevelopment and restrict who lived there as well as what activities were permitted. This is a case study of the trajectory of Milneburg and the cultural adaptations of its residents to keep it distinct, vital and …
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Sexuality and Power in Elizabeth Inchbald's <em>A Simple Story</em>.
… overtly displays her sexuality and uses it to gain control of men. Her guardian Dorriforth, a Catholic priest, attempts to repress her sexual power. Miss Milner dies in exile, but Inchbald rewards her by saving her from a marriage in which her husband subdues her sexuality. Contrarily, Miss …
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