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008			150903s2011 ne | o |||| 0|eng d
020			_a9789048199358 _99789048199358
024	7		_a10.1007/9789048199358 _2doi
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040			_aMX-SnUAN _bspa _cMX-SnUAN _erda
050		4	_aTK7888.4
100	1		_avan Bezooijen, Andre. _eautor _9354677
245	1	0	_aAdaptive RF Front-Ends for Hand-held Applications / _cby Andre van Bezooijen, Reza Mahmoudi, Arthur van Roermund.
264		1	_aDordrecht : _bSpringer Netherlands, _c2011.
300			_axv, 200 páginas 100 ilustraciones _brecurso en línea.
336			_atexto _btxt _2rdacontent
337			_acomputadora _bc _2rdamedia
338			_arecurso en línea _bcr _2rdacarrier
347			_aarchivo de texto _bPDF _2rda
490	0		_aAnalog Circuits and Signal Processing
500			_aSpringer eBooks
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.
590			_aPara consulta fuera de la UANL se requiere clave de acceso remoto.
700	1		_aMahmoudi, Reza. _eautor _9317181
700	1		_avan Roermund, Arthur. _eautor _9318521
710	2		_aSpringerLink (Servicio en línea) _9299170
776	0	8	_iEdición impresa: _z9789048199341
856	4	0	_uhttp://remoto.dgb.uanl.mx/login?url=http://dx.doi.org/10.1007/978-90-481-9935-8 _zConectar a Springer E-Books (Para consulta externa se requiere previa autentificación en Biblioteca Digital UANL)
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999			_c312765 _d312765