Overview

Design and Analysis of High Efficiency Line Drivers for xDSL covers the most important building block of an xDSL (ADSL, VDSL, ) system: the line driver. Traditional Class AB line drivers consume more than 70 per cent of the total power budget of state-of-the-art ADSL modems. This book describes the main difficulties in designing line drivers for xDSL. The most important specifications are elaborated staring from the main properties of the channel and the signal properties. The traditional (class AB), state-of-the-art (class G) and future technologies (class K) are discussed. The main part of Design and Analysis of High Efficiency Line Drivers for xDSL describes the design of a novel architecture: the Self-Oscillating Power Amplifier or SOPA. This architecture uses a non-linear, asynchronous modulation scheme that enables highly efficient, highly linear transmission. The concept has been proven by two implementations in a digital CMOS technology: a G-Lite compliant line driver with 61 per cent efficiency and a full ADSL-VDSL downstream compliant power amplifier with 47 per cent power efficiency. The proposed architecture is fully analysed and complete design plans including CMOS sca

Full Product Details

Author:   Tim Piessens ,  Michiel Steyaert
Publisher:   Springer-Verlag New York Inc.
Imprint:   Springer-Verlag New York Inc.
Edition:   2004 ed.
Volume:   759
Dimensions:   Width: 15.50cm , Height: 1.50cm , Length: 23.50cm
Weight:   0.559kg
ISBN:  

9781402077272

ISBN 10:   1402077270
Pages:   235
Publication Date:   31 March 2004
Audience:   Professional and scholarly ,  Professional & Vocational
Format:   Hardback
Publisher's Status:   Active
Availability:   Out of stock  
The supplier is temporarily out of stock of this item. It will be ordered for you on backorder and shipped when it becomes available.

Table of Contents

Preface. List of Figures. List of Tables.- 1: Introduction. 1. Motivation of the Work. 2. Organisation of the Book.- 2: Traditional xDSL Line Drivers. 1. Broadband Communication Technology. 2. The Channel. 3. Modulation Techniques. 4. Driving the Line. 5. Solutions for xDSL Line Drivers. 6. Conclusions.- 3: Describing Function Analysis. 1. Non-linear Systems. 2. The Describing Function Method. 3. Conclusions.- 4: Behavioural Modelling of the SOPA. 1. Reference Model. 2. Zeroth Order SOPAs. 3. Higher Order SOPA Amplifiers. 4. Final Remarks and Conclusions.- 5: Design Plan and CAD Tools. 1. Design Plan Synthesis. 2. CAD-tools to Support the Design Methodology. 3. Conclusions.- 6: Realisations in Mainstream CMOS. 1. A Zeroth Order SOPA. 2. A Third Order SOPA in .35 mum CMOS. 3. Conclusions.- 7: Conclusions. 1. The Objectives. Glossary. Appendices.- A: Stability Analysis of the Coupled SOPA. 1. Stability Criterion. 2. Polar Form of the Coupled Open Loop Transfer Function. 3. Calculation of the Stability Conditions.- References.- Index.

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