3G-4G Multimode Handset Challenges III: Impact on PA Design

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  • Author: Kevin Walsh and Jackie Johnson

In this paper, Part 3 of our three-part series on 3G/4G multimode handsets, the authors will examine the fundamental challenges engineers face when designing front ends to be multi-band and multistandard across different modulations.

Key Concepts Discussed:

• Power amplifier background.

• Low Power Mode versus DC-DC converters: impact on battery current.

• Quadrature versus single-ended architectures.