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 32 for “"low phase noise"”.
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Low phase-noise VCO design
Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2003.
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Low phase noise, high bandwidth frequency synthesis techniques
A quantization noise reduction technique is proposed that allows fractional-N frequency synthesizers to achieve high closed loop bandwidth and low output phase noise simultaneously. Quantization induced phase noise is the bottleneck in state-of-the-art synthesizer design, and results in a …
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Design techniques for temperature insensitive, low phase noise oscillator
… crystals which offer high quality factor, good phase noise performance and excellent stability against temperature, voltage and process variation. However, due to incompatibility with silicon integration and high power consumption, they are not suitable for biomedical devices which require long …
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Monolithic low phase noise oscillators for moderate frequency applications
Low noise oscillators are critical building blocks in a wide range of commercial electronics. Increased levels of integration have created a strong need for integrated oscillator solutions despite generally inferior noise performance. The development of non-linear noise models that can accurately …
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A simple transformer-based resonator architecture for low phase noise LC oscillators
… Straayer in [5] produces the same reduction in phase noise. The use of this type of resonator topology is a valuable technique which can be employed by RF engineers to reduce the phase noise generated by oscillators in high speed RF systems. Such techniques which increase the loaded Q of the …
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A low phase noise ring oscillator phase-locked loop for wireless applications
… 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 controlled oscillator …
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Analysis and Design of Wide Tuning Range Low Phase Noise mm-wave LC-VCOs
… oscillator (LC-VCO), is required to have low phase noise while maintaining wide tuning range to achieve low bit error rates (BERs). Due to the large parasitic capacitance and high losses in silicon based technologies, extending the tuning range and reducing phase noise is becoming very …
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High Performance RF Circuit Design: High Temperature, Ultra-Low Phase Noise, and Low Complexity
… compensated transmitter design, ultra-low phase noise signal generators, and compact and low complexity polar transmitter design. Increase in the ambient temperature can impact the performance of the entire communication system. However, the RF hardware is main part of the system that …
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Low Phase Noise Oscillator Design. A Design Methodology for Improving Performance: Theoretical Analysis, CAD Simulations, and Prototype Building
… as well as practical aspects in the design of low phase noise LC-tank CMOS RF oscillators. Novel analytical techniques for estimating the periodic steady-state solution, perturbation-projection vector, and phase noise/timing jitter for oscillators are presented. These techniques enable a …
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The Analysis and Design of Phase-tunable Low-Power Low-Phase-Noise I/Q Signal Sources for Analog Phase Calibrated Transceivers
Due to the demand for low-cost, small-form factor and large-scale integration of system-on-chip wireless transceivers, the image-reject, zero-IF and low-IF receiver architectures have become the main topologies used in mainstream wireless communication systems. Consequently, signal sources with …
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Low jitter phase-locked loop clock synthesis with wide locking range
… integration in many communications applications. Phase noise and timing jitter are important design considerations for these communications applications. The desire for highly complex levels of integration using low cost CMOS technologies works against the minimization of timing jitter and phase …
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Frequency Locking Techniques Based on Envelope Detection for Injection-Locked Signal Sources
… challenges in terms of frequency tuning range, phase noise, and power consumption. Recently, injection locking has been a popular technique to solve these design challenges for frequency generation. However, the narrow locking range of the injection locking techniques limits their use. …
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Design Techniques for Frequency Synthesizers in Highly Scaled CMOS Technologies
… and the high density of the nanometer devices. Phase-locked-loop-based frequency synthesizers are essential building blocks in almost all the communication systems. The design of PLLs is a true mixed signal design challenge covering from high speed analog and RF blocks (VCO), to high speed …
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Design and Analysis of a 80 GHz Hybrid CMOS Dielectric Resonator Oscillator
This work studies a high frequency, low phase noise, hybrid CMOS oscillator based on a cylindrical dielectric resonator coupled directly to an on chip structure. Dielectric resonators (DR) are known for their high quality factor, low cost, and high temperature stability which makes them a desirable …
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Performance optimization of lateral-mode thin-film piezoelectric-on-substrate resonant systems
… The use of lateral-mode TPoS designs allows for fabrication of dispersed-frequency filters on a single substrate, thus significantly reducing the size and manufacturing cost of devices. TPoS filters also offer a lower temperature coefficient of frequency, and better power handling …
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Applications of Fourier Domain Mode Locked lasers for optical coherence tomography imaging
… light. OCT imaging is performed using low-coherence interferometry, typically with a fiber optic Michelson interferometer. OCT imaging has recently been performed by measuring the spectrum of the interference signal in the Fourier domain. In "swept source OCT" implementations, the …
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A 1.6-3.2GHz, high phase accuracy quadrature phase locked loop
… quadrature outputs, and is geared towards low phase noise. The VCO is identified as the limiting factor in the tuning range and source of the quadrature outputs, as well as the primary source of the phase noise above the loop bandwidth of the PLL, so its design is the principle focus …
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Fully Integrated CMOS-compatible mode-locked lasers
… all-optical sampling, on-chip frequency combs, low phase noise microwave oscillators, photonic ADCs and others. First-ever fully-integrated on-chip mode-locked lasers are demonstrated in this work, fabricated using a CMOS-compatible process. The lasers have no o-chip elements other than the pump …
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