Lucien Breems's Books

Continuous-Time Sigma-Delta Modulation for A/D Conversion in Radio Receivers

By: Lucien Breems,Johan Huijsing

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Continuous-Time Sigma-Delta Modulation for A/D Conversion in Radio Receivers

By: Lucien Breems,Johan Huijsing

This text describes the design and theory of continuous-time sigma-delta modulators for analogue-to-digital conversion in radio receivers. The book's main focus is on dynamic range, linearity and power efficiency aspects of sigma-delta modulators, which are very important requirements for use in battery operated receivers.

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Page Count

165

Publisher

Springer Science & Business Media

Published Date

ISBN 10

0306480042

ISBN 13

9780306480041

Mobility-based Time References for Wireless Sensor Networks

By: Fabio Sebastiano,Lucien J. Breems,Kofi A Makinwa

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Mobility-based Time References for Wireless Sensor Networks

By: Fabio Sebastiano,Lucien J. Breems,Kofi A Makinwa

This book describes the use of low-power low-cost and extremely small radios to provide essential time reference for wireless sensor networks. The authors explain how to integrate such radios in a standard CMOS process to reduce both cost and size, while focusing on the challenge of designing a fully integrated time reference for such radios. To enable the integration of the time reference, system techniques are proposed and analyzed, several kinds of integrated time references are reviewed, and mobility-based references are identified as viable candidates to provide the required accuracy at low-power consumption. Practical implementations of a mobility-based oscillator and a temperature sensor are also presented, which demonstrate the required accuracy over a wide temperature range, while drawing 51-uW from a 1.2-V supply in a 65-nm CMOS process.

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Page Count

176

Publisher

Springer Science & Business Media

Published Date

ISBN 10

1461434831

ISBN 13

9781461434832

High Speed and Wide Bandwidth Delta-Sigma ADCs

By: Muhammed Bolatkale,Lucien J. Breems,Kofi A. A. Makinwa

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High Speed and Wide Bandwidth Delta-Sigma ADCs

By: Muhammed Bolatkale,Lucien J. Breems,Kofi A. A. Makinwa

This book describes techniques for realizing wide bandwidth (125MHz) over-sampled analog-to-digital converters (ADCs) in nano meter-CMOS processes. The authors offer a clear and complete picture of system level challenges and practical design solutions in high-speed Delta-Sigma modulators. Readers will be enabled to implement ADCs as continuous-time delta-sigma (CT∆Σ) modulators, offering simple resistive inputs, which do not require the use of power-hungry input buffers, as well as offering inherent anti-aliasing, which simplifies system integration. The authors focus on the design of high speed and wide-bandwidth ΔΣMs that make a step in bandwidth range which was previously only possible with Nyquist converters. More specifically, this book describes the stability, power efficiency and linearity limits of ΔΣMs, aiming at a GHz sampling frequency.

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