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 42 for “"Voltage controlled oscillator"”.
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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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A PVT tolerant voltage-controlled oscillator for automotive applications
… focusses on the development of an integrated oscillator for automotive applications. The oscillator operates based on the Barkhausen criterion, which is a mathematical requirement used in electronics to predict whether a linear electronic circuit will oscillate. In this thesis, a …
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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
… synchronous sampling makes use of a high purity oscillator to minimize the clock jitter. This thesis focuses 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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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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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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A low phase noise ring oscillator phase-locked loop for wireless applications
… level design of a 900MHz [Sigma][Detta] ring oscillator based phase-locked loop using 0.35[mu]m technology. Multiple phase noise theories are considered giving insight into low phase-noise voltage controlled oscillator design. The circuit utilizes a fully symmetric differential voltage …
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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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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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Stabilizing the dual inverted pendulum : a practical approach
… control and drive the pendulum cart, including a voltage-controlled oscillator, three-phase switching power amplifier, and acceleration feedback controller.
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Phase Noise in CMOS Phase-Locked Loop Circuits
… of noises from its building blocks: voltage-controlled oscillator, frequency divider, phase-frequency detector, loop filter and auxiliary input reference clock. A linear time invariant model with additive noise sources in frequency domain is presented to analyze the phase noise. The …
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A Wide-Bandwidth Galvanically Isolated Current Sensor with Frequency Modulation
… architecture of the proposed sensor includes a voltage-controlled oscillator-based frequency modulator that offers inductive galvanic isolation and a phase-locked loop-based frequency demodulator. This current sensor solution is implemented in a 65nm CMOS technology, occupies an area of 1.88 …
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Development of a Sensor Readout Integrated Circuit Towards a Contact Lens for Wireless Intraocular Pressure Monitoring
… linear regulator that powers a current-starved voltage-controlled oscillator (CSVCO) used for establishing a backscatter communication link. Additional circuitry is included to regulate power to and from the battery. An undervoltage lockout circuit protects the battery from deep discharge …
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Substrate noise analysis and techniques for mitigation in mixed-signal RF systems
… thus making them susceptible to substrate voltage variations. This problem is exacerbated at higher frequencies as the effectiveness of standard isolation technique diminishes considerably. Historically, substrate noise was not a problem because each system was fabricated in its own package …
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On-chip Spiral Inductor/transformer Design And Modeling For Rf Applications
… (RF) IC's such as low-noise amplifiers and oscillators. High performance inductor has become one of the critical components for voltage controlled oscillator (VCO) design, for its quality factor (Q) value directly affects the VCO phase noise. The optimization of inductor layout can improve …
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Design of a clock and data recovery circuit in 65 nm technology
… detector, a charge pump, a loop filter and a voltage-controlled oscillator. This thesis includes an overview of all the building blocks of a PLL-based CDR, derivation of the mathematical formulations of the negative feedback loop, and a report on closed loop behavioral modeling of the entire …
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