Adaptive RF Front-Ends for Hand-held Applications

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Synopsis

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.

Book details

Edition:
2011
Series:
Analog Circuits and Signal Processing
Author:
Andre van Bezooijen, Reza Mahmoudi, Arthur H.M. van Roermund
ISBN:
9789048199358
Related ISBNs:
9789048199341
Publisher:
Springer Netherlands
Pages:
N/A
Reading age:
Not specified
Includes images:
Yes
Date of addition:
2022-08-26
Usage restrictions:
Copyright
Copyright date:
2011
Copyright by:
Springer Science+Business Media B.V. 
Adult content:
No
Language:
English
Categories:
Computers and Internet, Nonfiction, Science, Technology