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Adaptive RF Front-Ends for Hand-held Applications

  • Andre van Bezooijen
  • Reza Mahmoudi
  • Arthur van Roermund

Part of the Analog Circuits and Signal Processing book series (ACSP)

Table of contents

  1. Front Matter
    Pages i-xv
  2. André van Bezooijen, Reza Mahmoudi, Arthur van Roermund
    Pages 1-8
  3. André van Bezooijen, Reza Mahmoudi, Arthur van Roermund
    Pages 9-33
  4. André van Bezooijen, Reza Mahmoudi, Arthur van Roermund
    Pages 35-106
  5. André van Bezooijen, Reza Mahmoudi, Arthur van Roermund
    Pages 107-128
  6. André van Bezooijen, Reza Mahmoudi, Arthur van Roermund
    Pages 129-130
  7. Back Matter
    Pages 131-153

About this book

Introduction

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.

Keywords

Adaptive RF front-ends Adaptive RF front-ends Adaptive RF front-ends Antenna hand-effects Antenna hand-effects Antenna hand-effects Impedance control Impedance control Impedance control Mobile communication Mobile communication Mobile communication Power amplifier ruggedness Power amplifier ruggedness Power amplifier ruggedness

Authors and affiliations

  • Andre van Bezooijen
    • 1
  • Reza Mahmoudi
    • 2
  • Arthur van Roermund
    • 3
  1. 1.EPCOS NetherlandsNijmegenNetherlands
  2. 2., Electrical EngineeringEindhoven University of TechnologyEindhovenNetherlands
  3. 3., Electrical EngineeringTechnical University EindhovenEindhovenNetherlands

Bibliographic information

  • DOI https://doi.org/10.1007/978-90-481-9935-8
  • Copyright Information Springer Science+Business Media B.V. 2011
  • Publisher Name Springer, Dordrecht
  • eBook Packages Engineering
  • Print ISBN 978-90-481-9934-1
  • Online ISBN 978-90-481-9935-8
  • Buy this book on publisher's site
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