Adaptive RF Front-Ends for Hand-held Applications
Author:   Andre van Bezooijen ,  Reza Mahmoudi ,  Arthur H.M. van Roermund
Publisher:   Springer
Volume:   0
ISBN:  

9789048199341


Pages:   153
Publication Date:   05 November 2010
Format:   Hardback
Availability:   In Print   Availability explained
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Adaptive RF Front-Ends for Hand-held Applications


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Overview

The RF front-end – antenna combination is a vital part of a mobile phone because its performance is very relevant to the link quality between hand-set and cellular network base-stations. The RF front-end performance suffers from changes in operating environment, like hand-effects, that are often unpredictable. Adaptive RF Front-Ends for Hand-Held Applications presents an analysis on the impact of fluctuating environmental parameters. In order to overcome undesired behavior two different adaptive control methods are treated that make RF frond-ends more resilient: adaptive impedance control, and adaptive power control. Several adaptive impedance control techniques are discussed, using a priori knowledge on matching network properties, in order to simplify robust 2-dimensional control. A generic protection concept is presented, based on adaptive power control, which improves the ruggedness of a power amplifier or preserves its linearity under extremes. It comprises over-voltage, over-temperature, and under-voltage protection.

Full Product Details

Author:   Andre van Bezooijen ,  Reza Mahmoudi ,  Arthur H.M. van Roermund
Publisher:   Springer
Imprint:   Springer
Volume:   0
Dimensions:   Width: 15.50cm , Height: 1.10cm , Length: 23.50cm
Weight:   0.930kg
ISBN:  

9789048199341


ISBN 10:   9048199344
Pages:   153
Publication Date:   05 November 2010
Audience:   College/higher education ,  Professional and scholarly ,  Postgraduate, Research & Scholarly ,  Professional & Vocational
Format:   Hardback
Publisher's Status:   Active
Availability:   In Print   Availability explained
This item will be ordered in for you from one of our suppliers. Upon receipt, we will promptly dispatch it out to you. For in store availability, please contact us.

Table of Contents

Symbols.- Abbreviations.- 1 Introduction.- 2 Adaptive RF frond-ends.- 3 Adaptive impedance control.- 4 Adaptive power control.- 5 Conclusions.- Appendix A Overview of adaptively controlled matching networks.- Appendix B A dual-banding technique.- Appendix C Transistor breakdown voltages.- References.- Summary.

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