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This article describes a technique based on envelope tracking that has been proven to offer a dramatic improvement in efficiency, from typically 15% to over 50%, while offering multiband performance.
Modern complex modulation schemes have the disadvantage of requiring linear power amplification characteristics, which compromises overall system efficiency because RF power amplifiers (RFPA) are much less efficient when operating in the linear region than they are at maximum power. The power amplifier and its associated components consume up to...
