{"product_id":"9789048199341-adaptive-rf-front-ends-for-hand-held-applications","title":"Adaptive RF Front-Ends for Hand-held Applications","description":"\u003cmeta content=\"text\/html; charset=utf-8\" http-equiv=\"Content-Type\"\u003e\u003cp\u003e\u003cspan\u003eThe RF front-end - antenna combination is a vital part of a mobile phone. This book offers a unique account of adaptive RF front-ends. It includes an analysis on the impact of fluctuating environmental parameters, and a generic protection concept is presented.\u003cbr\u003e\u003cp\u003eThe 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.\u003c\/p\u003e \u003cp\u003e\u003cem\u003eAdaptive RF Front-Ends for Hand-Held Applications\u003c\/em\u003e 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.\u003c\/p\u003e \u003cp\u003eSeveral 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.\u003c\/p\u003e\n\u003cbr\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"Rarewaves","offers":[{"title":"Default Title","offer_id":58547141083510,"sku":"9789048199341","price":105.04,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0092\/7504\/8033\/files\/orig_28329038.jpg?v=1787803944","url":"https:\/\/www.rarewaves.com\/products\/9789048199341-adaptive-rf-front-ends-for-hand-held-applications","provider":"Rarewaves.com","version":"1.0","type":"link"}