Téléchargez le livre : Adaptive RF Front-Ends for Hand-held Applications

Adaptive RF Front-Ends for Hand-held Applications

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Éditeur :

Springer


Collection :

Analog Circuits and Signal Processing

Paru le : 2010-10-28

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Description
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.
Pages
153 pages
Collection
Analog Circuits and Signal Processing
Parution
2010-10-28
Marque
Springer
EAN papier
9789048199341
EAN EPUB
9789048199358
Informations sur l'ebook
Nombre pages copiables
1
Nombre pages imprimables
15
Taille du fichier
2161 Ko
Prix
94,94 €

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