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 316 for “"low-noise"”.
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Low noise cmos image sensors
… but these systems tend to interfere with workflow. CMOS image sensors have been explored as a solution because of their high performance, low noise and small footprint. Reducing the noise floor on CMOS image sensors makes it possible to develop a general image sensor that can be used for …
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Low-noise preamplifier for capacitive sensors
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1995.
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Broadband, low-noise and power microwave amplifiers
The design of Broadband, Low-Noise and Power Microwave Amplifiers using microstrip softboard technology is investigated. The software program TOUCHSTONE (TM) by EEsof is used extensively as a basic design tool. The characterisation of the GaAs Field Effect Transistors, used for the amplifiers, is …
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A High Temperature Wideband Low Noise Amplifier
… This paper presents a high temperature wideband low noise amplifier (LNA) with zero temperature coefficient maximum available gain (ZTCMAG) biasing for a downhole communication system. The proposed LNA is designed and prototyped using 0.25μm GaN on SiC RF transistor technology, which is chosen …
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A Power Constrained 433-MHz Low Noise Amplifier
<p>Within wireless communication systems, low noise amplifiers are critical for the performance of receivers. They are primarily responsible for providing enough gain while adding little noise to overcome the noise of the subsequent stages. The LNA presented here is part of a battery-powered …
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A temperature insensitive low noise RC relaxation oscillator
… absence of current source in the RC branch, good noise performance is also achieved. Combined with the comparator offset canceling switch matrix, good temperature stability and noise performance is achieved. Fabricated in the 65 nm CMOS technology, the prototypes achieve an average inaccuracy of …
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Multidisciplinary Design Optimization of Low-Noise Transport Aircraft
… of this research is to examine how to design low-noise transport aircraft using Multidisciplinary Design Optimization (MDO). The subject is approached by designing for low-noise both implicitly and explicitly. The explicit design approach involves optimizing an aircraft while explicitly …
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New strategies for low noise, agile PLL frequency synthesis
… fast switching and minimal spurious and phase noise. The conflict between high resolution and fast switching leads to two separate integer synthesisers to satisfy critical system requirements. This thesis concerns a new sigma-delta fractional-N synthesiser design which is able to be directly …
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Engineering Low Noise Organic Electrochemical Transistors for Electrophysiology Applications
… and have been shown to provide higher signal-to-noise ratio (SNR) than electrodes. Their unique properties can pave the way for enhanced performance neural interfaces whilst minimising the invasiveness of the recording method. In this study, a thorough analysis of the noise characteristics of …
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Design of low noise amplifier for ultra-wideband applications
The recent surge in the demand for low power portable wireless electronics that can offer extremely high data rates has resulted in much active research in Ultra-Wideband (UWB) systems. UWB is widely recognized as a promising technology for high data rate, short-range applications with precise time …
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Low-noise broadband I. F. amplifiers for radiometric receivers.
Thesis: M.S., Massachusetts Institute of Technology, Department of Electrical Engineering, 1972
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A reconfigurable low noise amplifier for a multi-standard receiver
… multiband LNAs for two bands of interest (lower frequency band – 800 to 1000 MHz and upper frequency band – 1800 to 2200 MHz). These two bands should cover most of the 2G and 3G standards currently in use worldwide. In this work, the design of LNA based on IDCS topology using wide band …
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High-Resolution Low-Noise Polarization Imaging Sensor for Astronomical Applications
… about celestial bodies. This work presents a low-noise high-resolution polarization imaging sensor consisting of a CCD imager overlaid with a nanowire linear polarizer filter array of four different orientations: 0°, 45°, 90°, and 135°) matched to the pixel pitch. Fabrication details and …
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Introduction of low noise amplifier for ultra-wideband radar receiver
… of the subject. My work is to provide a novel low-noise Amplifier (LNA) design. Major contributions include: Analysis of parameters of an LNA design which represent the important characteristics of for an ultra-wideband short range radar system. Comparison of classic LNAs and documenting of …
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Design of a Low Noise Amplifier for Wireless Sensor Networks
… In a high performance radio receiver, the Low Noise Amplifier (LNA) is the first circuit, and its noise performance dominates the entire receiver. Depending upon the system in which they are used, LNAs can be designed according to various topologies and structures. The LNA needs to have …
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A Test and Characterisation Facility for Cryogenic Low Noise Amplifiers
… for testing and determining the equivalent noise temperature of a cryogenic LNA operating at a physical temperature of 20 K is selected and presented. This method was tested at the Klerefontein support base and the measurements allowed conclusions to be drawn that show that the uncertainty …
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Enhanced performance of a low noise discrete pre-amplifier stage
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1997.
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A low power, low noise, 1.8 GHz voltage-controlled oscillator
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1997.
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