{"product_id":"adaptive-rf-front-ends-for-hand-held-applications","title":"Adaptive RF Front-Ends for Hand-held Applications","description":"\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","brand":"Gardners","offers":[{"title":"Default Title","offer_id":57536469238133,"sku":"9789048199341","price":89.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/7193\/3106\/files\/9789048199341.jpg?v=1788186314","url":"https:\/\/backstory.london\/products\/adaptive-rf-front-ends-for-hand-held-applications","provider":"Backstory","version":"1.0","type":"link"}