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.
Product Identifiers
Publisher
Springer
ISBN-13
9789048199341
eBay Product ID (ePID)
106382562
Product Key Features
Subject Area
Manufacturing Engineering
Author
Reza Mahmoudi, ANDRÉ Van Bezooijen, Arthur H.M. Van Roermund
Publication Name
Adaptive RF Front-Ends for Handheld Applications
Format
Hardcover
Language
English
Subject
Chemistry, Computer Science, Physics
Publication Year
2010
Type
Textbook
Number of Pages
153 Pages
Dimensions
Item Height
235mm
Item Width
155mm
Item Weight
930g
Additional Product Features
Title_Author
Reza Mahmoudi, Arthur H.M. Van Roermund, ANDRÉ Van Bezooijen