000			03086nam a22005055i 4500
001			u378148
003			SIRSI
005			20160812084539.0
007			cr nn 008mamaa
008			101029s2011 ne | s |||| 0|eng d
020			_a9789048199358 _9978-90-481-9935-8
040			_cMX-MeUAM
050		4	_aTK7888.4
082	0	4	_a621.3815 _223
100	1		_avan Bezooijen, Andre. _eauthor.
245	1	0	_aAdaptive RF Front-Ends for Hand-held Applications _h[recurso electrónico] / _cby Andre van Bezooijen, Reza Mahmoudi, Arthur van Roermund.
264		1	_aDordrecht : _bSpringer Netherlands, _c2011.
300			_aXV, 153 p. _bonline resource.
336			_atext _btxt _2rdacontent
337			_acomputer _bc _2rdamedia
338			_aonline resource _bcr _2rdacarrier
347			_atext file _bPDF _2rda
490	1		_aAnalog Circuits and Signal Processing
505	0		_aSymbols -- Abbreviations -- 1 Introduction -- 2 Adaptive RF frond-ends -- 3 Adaptive impedance control -- 4 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.
520			_aThe 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.
650		0	_aEngineering.
650		0	_aData transmission systems.
650		0	_aMicrowaves.
650		0	_aSystems engineering.
650	1	4	_aEngineering.
650	2	4	_aCircuits and Systems.
650	2	4	_aSolid State Physics.
650	2	4	_aInput/Output and Data Communications.
650	2	4	_aMicrowaves, RF and Optical Engineering.
700	1		_aMahmoudi, Reza. _eauthor.
700	1		_avan Roermund, Arthur. _eauthor.
710	2		_aSpringerLink (Online service)
773	0		_tSpringer eBooks
776	0	8	_iPrinted edition: _z9789048199341
830		0	_aAnalog Circuits and Signal Processing
856	4	0	_zLibro electrónico _uhttp://148.231.10.114:2048/login?url=http://link.springer.com/book/10.1007/978-90-481-9935-8
596			_a19
942			_cLIBRO_ELEC
999			_c206028 _d206028