The Design of Low Noise Oscillators. Ali Hajimiri, Thomas H. Lee

The Design of Low Noise Oscillators



Download The Design of Low Noise Oscillators



The Design of Low Noise Oscillators Ali Hajimiri, Thomas H. Lee ebook pdf
Publisher: Springer
Language: English
Page: 220
ISBN: 0792384555, 9780792384557

Oscillators are a fundamental building block of many communications systems. Demands on spectral purity continue to increase because of constraints on available spectrum, and consequently there has been a need to understand better precisely what causes jitter and phase noise and what to do about it. This book provides a quantitatively description of how circuit and device noise becomes oscillator phase noise and uses this new model to teach the reader how to design low noise oscillators. The emphasizes the integrated oscillators and addresses issues related to design of integrated oscillators. It exploits so-called cyclostationary properties of noise to improve the spectral purity of the oscillator.

This book applies examines in great detail the behavior of both tuned and relaxation oscillators. Long-standing conundrums (such as "what is the optimum number of stages in a ring oscillator?") are resolved at last, and an important framework for answering questions as yet unasked is provided.

From the Back Cover

The tremendous growth in wireless and mobile communications has placed stringent requirements on channel spacing and, by implication, on the phase noise of oscillators. Compounding the challenge has been a recent drive toward implementations of transceivers in CMOS, whose inferior l/f noise performance has usually been thought to disqualify it from use in all but the lowest-performance oscillators.

Low noise oscillators are also highly desired in the digital world. The continued drive toward higher clock frequencies translates into a demand for ever-decreasing jitter.

There is a need for a deep understanding of the fundamental mechanisms governing the process by which device, substrate, and supply noise turn into jitter and phase noise. Existing models generally offer only qualitative insights, however, and it has not always been clear why they are not quantitatively correct.

The Design of Low Noise Oscillators offers a new time-variant phase noise model. By discarding the implicit assumption of time- invariance underlying many other approaches, this model is capable of making quantitative predictions of the phase noise and jitter of different types of oscillators. It is able to attribute a definite amount of phase noise to every noise source in the circuit. Because of its time-variant nature, the model also takes into account the effect of cyclostationary noise sources in a natural way. It details the precise mechanism by which low frequency noise, such as l/f noise, upconverts into close-in phase noise. An important new understanding is that rise and fall time symmetry controls such upconversion. More important, it suggests practical methods for suppressing this upconversion, so that good oscillators can be built in technologies with notoriously poor l/f noise performance (such as CMOS or GaAs MESFET).

The Design of Low Noise Oscillators will be of interest to both analog and digital circuit as well as RF circuit designers.



MORE EBOOKS:
Scalable Optimization Via Probabilistic Modeling: From Algorithms to Applications read







Tags: The Design of Low Noise Oscillators ebook pdf djvu epub
The Design of Low Noise Oscillators download pdf epub djvu
Download The Design of Low Noise Oscillators free ebook pdf
Read The Design of Low Noise Oscillators online book
The Design of Low Noise Oscillators cheap ebook for kindle and nook
The Design of Low Noise Oscillators download book
Ali Hajimiri, Thomas H. Lee ebooks
The Design of Low Noise Oscillators download pdf rapidshare mediafire fileserve 4shared torrent