| Description |
1 online resource (xv, 153 pages) : illustrations |
| Series |
Analog circuits and signal processing |
|
Analog circuits and signal processing series.
|
| Contents |
Adaptive RF front-ends -- Adaptive impedance control -- Adaptive power control |
| Summary |
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 |
| Bibliography |
Includes bibliographical references (pages 148-153) |
| Notes |
Print version record |
| Subject |
Wireless communication systems.
|
|
Adaptive signal processing.
|
|
TECHNOLOGY & ENGINEERING -- Telecommunications.
|
|
Ingénierie.
|
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Adaptive signal processing
|
|
Wireless communication systems
|
| Form |
Electronic book
|
| Author |
Mahmoudi, Reza
|
|
Roermund, Arthur H. M. van
|
| LC no. |
2010937994 |
| ISBN |
9789048199358 |
|
9048199352 |
|
