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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 94 for “"voltage-controlled"”.
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Analysis of inductance-capacitance voltage-controlled oscillators
… focuses on analysis of inductance-capacitance voltage-controlled oscillators (LC VCOs), specifically, double switch cross-coupled oscillators. Fundamentals on LC VCOs, like oscillation conditions, classical LC VCO architectures, inductor and capacitor choices, and phase noise calculations are …
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High Temperature Microwave Frequency Voltage-Controlled Oscillator
… bandwidth to support the higher data-rate. A voltage-controlled oscillator is an essential part of an RF modem. This thesis presents a 2.336-2.402 GHz voltage-controlled oscillator constructed with 0.25 μm GaN-on-SiC technology high electron mobility transistor (HEMTs). The measured operating …
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Automatic generation of an LC voltage controlled oscillator
A Voltage Controlled Oscillator (VCO) is used to generate a signal with a frequency that is a function of an input voltage amplitude, and is an integral part of circuits such as phase locked loops, frequency synthesizers, down conversion receivers, and clock generators. A typical design flow for a …
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Design of high frequency voltage-controlled pulse oscillator.
Massachusetts Institute of Technology. Dept. of Electrical Engineering. Thesis. 1966. M.S.
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A PVT tolerant voltage-controlled oscillator for automotive applications
… circuit will oscillate. In this thesis, a voltage-controlled oscillator is designed for increased performance under various process, voltage and temperature (PVT) conditions. By applying a voltage reference block, the output frequency of 0.5MHz, 0.75MHz, 1MHz or 1.25MHz can be obtained. In …
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A VHF/UHF Voltage Controlled Oscillator in 0.5um BiCMOS
… functions and lower frequency analog circuits. A voltage controlled oscillator (VCO) is just one radio frequency (RF) circuit block that can benefit from a more complex semiconductor process like BiCMOS. This thesis presents the design and evaluation of an integrated VCO in the IBM 5S BiCMOS …
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On-Chip Voltage Controlled Oscillator for Clock Data Recovery Systems
… on the design of a high purity, low power, voltage controlled oscillator to be used as part of the clock data recovery system in a 25 Gb/s serial IO link.
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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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Evaluation of Voltage-Controlled Active Gate-Drivers for SiC MOSFET Power Semiconductors
… improved thermal performance, and higher voltage rating. This higher switching frequency can reduce the size of the con- verter system, but is typically associated with higher dv/dt voltage slew rates that further increase electromagnetic interference (EMI) related phenomena. Conventional …
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Design and analysis of CMOS LC voltage controlled oscillator in 32nm SOI process.
University of Minnesota M.S. Thesis. May 2011. Major: Electrical Engineering. Advisor: Prof. Chris H. Kim. 1 computer file (PDF); vii, 36 pages.
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Analysis and design of wideband voltage controlled oscillators using self-oscillating active inductors.
Voltage controlled oscillators (VCOs) are essential components of RF circuits used in transmitters and receivers as sources of carrier waves with variable frequencies. This, together with a rapid development of microelectronic circuits, led to an extensive research on integrated implementations of …
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RF signal inductors in iUHD for voltage controlled oscillators in configurable RF integrated circuits
… performance parameters are used to design a voltage controlled oscillator (VCO) meeting 802.1 lb wireless specifications. The design demonstrates the importance of inductor quality factor in minimizing phase noise. It is also shown that further improvements can be made to RF integrated …
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Noise shaping techniques for analog and time to digital converters using voltage controlled oscillators
… time as a signal domain. In this context, voltage controlled ring oscillators are circuit elements that are not only very attractive due to their highly digital implementation which takes advantage of scaling, but also due to their ability to amplify or integrate conventional voltage …
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A Fully Monolithic 2.5 GHz LC Voltage Controlled Oscillator in 0.35 μm CMOS Technology
… to implement RF components such as mixers, voltage controlled oscillators (VCOs), and low noise amplifiers (LNAs). Future mass-market RF links, such as BlueTooth, will require the potentially low-cost single-chip solutions that CMOS can provide. In order for such single-chip solutions to be …
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Voltage Controlled Non-Volatile Spin State and Conductance Switching of a Molecular Thin Film Heterostructure
… cost narrow the list of candidates. Here we show voltage controllable, room temperature, stable locking of the spin state, and the corresponding conductivity change, when molecular spin crossover thin films are deposited on a ferroelectric substrate. This opens the door to the creation of a …
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Design and Characterization of RFIC Voltage Controlled Oscillators in Silicon Germanium HBT and Submicron MOS Technologies
… particularly in the design of monolithic voltage controlled oscillators (VCOs). VCOs are important components in the up or downconversion of RF signals in wireless transceivers. VCOs must have very low phase noise and spurious emissions, and be extremely power efficient to meet system …
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A low phase noise ring oscillator phase-locked loop for wireless applications
… considered giving insight into low phase-noise voltage controlled oscillator design. The circuit utilizes a fully symmetric differential voltage controlled oscillator with cascode current starved inverters to reduces current noise. A compact multi-modulus prescaler is presented, based on …
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A novel precision voltage reference using a micromechanical resonator
… describes the analysis and design of a precision voltage reference (PVR) based upon a micromechanical resonator. The precision voltage reference consists of two closed loop controllers and a nonlinear resonator. The oscillator loop maintains oscillations in the resonator. The phase locked loop is …
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Design and ESD Protection of Wideband, Radio Frequency Integrated Circuits in CMOS Technologies
… equalization, receiver amplifier, and voltage controlled oscillator is described. The I/O transceiver is fully ESD-protected with an expected 2-kV human body model failure threshold.
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