Download or read book A LF Study of Injection Locking in Pulsed Oscillators written by and published by . This book was released on 1973 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Noise Sidebands of a Pulse Injection Locked Oscillator Produced by Imperfect Locking written by Robert Gilman Jenks and published by . This book was released on 1967 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Study of Injection Locking in Optoelectronic Oscillator written by Prarthana Prakasha and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The random fluctuations of signal phase of an oscillator limit the precision of time and frequency measurements. The noise and long-term stability of the system's oscillator or clock is of major importance in applications such as optical and wireless communications, high-speed digital electronics, radar, and astronomy. The Optoelectronic Oscillator (OE Oscillator), a new class of time delay oscillator with promise as a low-phase noise source of microwave carriers, was introduced by Steve Yao and Lute Malek in 1996. The OE Oscillator combines into a closed loop an RF photonic link and an RF chain. The RF photonic link consists of a laser, electro-optic modulator, optical fibre delay line, and a photo-receiver that together provide an RF delay. An RF chain consists of one or more amplifiers and a RF resonator that together provide the sustaining amplification and the frequency selectivity necessary for single mode oscillation of the loop. The low loss of optical fibres enables the attainment of delays that correspond to optical fibre lengths of several kilometers. It is the long delay, unattainable in an all electronic implementations that is responsible for the superior phase noise performance of an OE Oscillator. In this thesis the fundamental principles of operation of an OE Oscillator are described and the principal sources of in-loop phase fluctuations that are responsible for phase-noise identified. This lays the ground for an exposition of the mechanism that describes the perturbation of a time delay oscillator by injection into the loop of a carrier that is detuned in frequency from the natural frequency of the oscillator. For sufficiently small detuning the oscillator can become phase locked to the injected carrier. The model presented in the thesis generalises the traditional Yao-Maleki and Leeson model to include all the important features that describe the injection locking dynamics of an OE Oscillator. In particular the common assumptions of single mode oscillation and weak injection are removed. This is important to correctly predict the effect of injection locking on the spurious peaks in the phase noise spectrum corresponding to the side-modes of a time delay oscillator. Simulation results are presented in order to validate the dynamics of the oscillator under injection and analytic results on the lock-in range and phase noise spectrum. A 10 GHz OE Oscillator with a single 5km delay line is used as an example in the simulation illustration.
Download or read book A Study of Injection Locked Solid State Oscillators written by Stanley P. Knight and published by . This book was released on 1969 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Analysis of Injection Locking in Oscillators and Simulation of Weakly Coupled Oscillator Networks written by Prateek Bhansali and published by . This book was released on 2010 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Analytical and Experimental Study of Injection locked Two port Oscillators written by and published by . This book was released on 1987 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Characterization and Modeling of Injection Locking in Synchronous Oscillators written by Theodore D. Flamouropoulos and published by . This book was released on 1990 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Study of Dual Injection Locked Optoelectronic Oscillators written by Olukayode Okusaga and published by . This book was released on 2011-09-09 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt: Low phase noise oscillators are critical components in several radio frequency (RF) applications. Low phase noise RF oscillators are used as frequency standards or clocks in: Doppler radar, free space and fiber-based telecommunications systems, global positioning systems and secure communications protocols. In all such applications, the oscillators must provide electromagnetic signals at a specified frequency. Such oscillators must have low phase noise as random deviations from the nominal phase rotation reduce their effectiveness as frequency standards or clocks. Furthermore, because these oscillators are used as frequency standards, they must not generate electromagnetic signals at any frequencies other than the nominal oscillating frequency. Signals at unwanted frequencies are referred to as spurious modes. Optoelectronic oscillators (OEOs) have proven to be promising sources of low phase noise radio frequency signals. The OEO is a ring oscillator with both optical and electrical paths. The OEO uses an optical fiber spool as an in-loop cavity to generate a time delay in an RF signal superimposed on a continuous wave optical beam. The low loss per unit length of optical fiber means that it can be used to generate very long delays. These long delays result in spectrally-narrow oscillating modes with low phase noise. However, long delays also lead to oscillator modes that are too narrowly spaced to be filtered by conventional RF filters. The dual injection-locked optoelectronic oscillator (DIL-OEO) has been proposed as a means to suppress spurious OEO modes. The DIL-OEO works by injection-locking a high-Q multi-mode "master" OEO to a low-Q single-mode "slave" OEO. In so doing, it is possible to generate an RF signal with both low phase noise and low spurious modes. In this work, we present a study of the injection-locking process in DIL-OEOs. We study the effects of injection-locking on both the phase noise and spurious modes of the DIL-OEO. We constructed a modular DIL-OEO which allowed us to independentally vary the injection levels and loop lengths in the DIL-OEO. Using our modular DIL-OEO, we conducted a systematic study of the effects of injection-locking parameters on the OEO's phase noise and spurious mode levels. The results of our systematic study allowed us to construct the first theoretical models describing the power spectrum of the DIL-OEO's steady-state signal. We also present theoretical models describing the dynamics of injection-locking in DIL-OEOs. Our dynamical models allow us to predict the locking bandwidth and stability of the DIL-OEO. In order to perform our experimental study, we required a measurement system capable of measuring the very low phase noise levels of our OEOs. We constructed a cross-correlation delay-line measurement system in order to measure the phase noise of our OEOs. In this work, we present a detailed description of our measurement system. We include a theoretical description of the delay-line measurement system. We also describe the experimental techniques used to calibrate, validate and optimize our measurement system. Because the DIL-OEO consists of two single-loop OEOs injection locked to each other, it was necessary to optimize each of the single-loop OEOs. In this work, we present experimental data showing the results of techniques we employed to minimize the phase noise of single-loop OEOs. Finally, guided by our experimental data and theoretical models, we constructed an optimized DIL-OEO with both low phase noise and low spurious mode levels. In this work, we present experimental data demonstrating a 60 dB reduction in the nearest neighbour spurious mode of a 4 km OEO. This...
Download or read book Topics in Injection Locking of Oscillators written by S. Lennart Gustafsson and published by . This book was released on 1975 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Unified Approach to the Analysis of Oscillator Noise and Injection Locking written by Tim Hillstrom and published by . This book was released on 1986 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Summaries of Papers Presented at the Conference on Lasers and Electro optics written by and published by . This book was released on 1989 with total page 508 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Canadian Theses written by National Library of Canada and published by . This book was released on 1980 with total page 720 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Semiconductor Devices and Integrated Electronics written by A. G. Milnes and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 1014 pages. Available in PDF, EPUB and Kindle. Book excerpt: For some time there has been a need for a semiconductor device book that carries diode and transistor theory beyond an introductory level and yet has space to touch on a wider range of semiconductor device principles and applica tions. Such topics are covered in specialized monographs numbering many hun dreds, but the voluminous nature of this literature limits access for students. This book is the outcome of attempts to develop a broad course on devices and integrated electronics for university students at about senior-year level. The edu cational prerequisites are an introductory course in semiconductor junction and transistor concepts, and a course on analog and digital circuits that has intro duced the concepts of rectification, amplification, oscillators, modulation and logic and SWitching circuits. The book should also be of value to professional engineers and physicists because of both, the information included and the de tailed guide to the literature given by the references. The aim has been to bring some measure of order into the subject area examined and to provide a basic structure from which teachers may develop themes that are of most interest to students and themselves. Semiconductor devices and integrated circuits are reviewed and fundamental factors that control power levels, frequency, speed, size and cost are discussed. The text also briefly mentions how devices are used and presents circuits and comments on representative applications. Thus, the book seeks a balance be tween the extremes of device physics and circuit design.
Download or read book High Power Microwaves written by James Benford and published by CRC Press. This book was released on 2007-02-05 with total page 552 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first edition of High Power Microwaves was considered to be the defining book for this field. Not merely updated but completely revised and rewritten, the second edition continues this tradition. Written from a systems perspective, the book provides a unified, coherent presentation of the fundamentals in this rapidly changing field. The p
Download or read book Perturbation Theory of Injection Locking for a Josephson Junction Oscillator written by Kishore C. Acharya and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Injection Locking and Combining of Multiple Gun Oscillators Using Microstrip Circuits written by A. M. A. R. I. Affandi and published by . This book was released on 1982 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Conference on Lasers and Electro optics written by Optical Society of America and published by . This book was released on 1989 with total page 502 pages. Available in PDF, EPUB and Kindle. Book excerpt:
