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Adaptive RF Front-Ends for Hand-held Applications : Analog Circuits and Signal Processing - Andre van Bezooijen

Adaptive RF Front-Ends for Hand-held Applications

By: Andre van Bezooijen, Reza Mahmoudi, Arthur H.M. van Roermund

eBook | 7 March 2016

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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.

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Non-FictionComputing & I.T.Computer ScienceEngineering & TechnologyElectronics & Communications EngineeringElectronics EngineeringCircuits & ComponentsComputer Networking & CommunicationsEDI Electronic Data InterchangeMicrowave TechnologyTechnology in GeneralEngineering in General
ScienceChemistryAnalytical ChemistrySpectrum AnalysisCommunications Engineering & TelecommunicationsPhysicsMaterials & States of MatterCondensed Matter Physics including Liquid State & Solid State PhysicsComputer Hardware

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