[ebook]Adaptive RF Front-Ends for Hand-held Applications

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[size=120%]Adaptive RF Front-Ends for Hand-held Applications (Analog Circuits and Signal Processing)
By Andre van Bezooijen, Reza Mahmoudi, Arthur H.M. van Roermund

• Publisher:   Springer
• Number Of Pages:   200
• Publication Date:   2010-11-05
• ISBN-10 / ASIN:   9048199344
• ISBN-13 / EAN:   9789048199341

Product 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.

TABLE OF CONTENTS
Symbols. Abbreviations.

1 Introduction. 1.1 Context and trends in wireless Communications. 1.2 Resilience to unpredictably changing environments. 1.3 Improvements by adaptively controlled RF front-ends. 1.4 Aim and scope of this book. 1.5 Book outline.

2 Adaptive RF frond-ends. 2.1 Introduction. 2.2 RF front-end functionality. 2.3 Fluctuations in operating conditions. 2.4 Impact of variables. 2.5 Adaptive control theory. 2.6 Identification of variables for detection and correction. 2.7 Conclusions on adaptive RF front-ends.

3 Adaptive impedance control. 3.1 Introduction. 3.2 Mismatch detection method. 3.3 Adaptively controlled PI-networks using differentially controlled capacitors. 3.4 Adaptively controlled L-network using cascaded loops. 3.5 Adaptive series-LC matching network using RF-MEMS. 3.6 Load line adaptation. 3.7 Conclusions on adaptive impedance control.

4 Adaptive power control. 4.1 Introduction. 4.2 Safe operating conditions. 4.3 Power adaptation for ruggedness. 4.4 Power adaptation for linearity. 4.5 Conclusions on adaptive power control.

5 Conclusions.

Appendix A Overview of adaptively controlled matching networks. Appendix B A dual-banding technique. Appendix C Transistor breakdown voltages.

References. Summary.

mtwumtwu

good reference at RF design field

audiopa

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iseesky

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Daniel10003

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wangjin0215

xiexie...kankan

chujn

下来看看，谢谢。

hawaii78

谢谢 啦

kebon22

thank u for sharing

bing131

很好的资料，学习了