3g/4G 时代，PA面临的挑战

3G4G Multimode Cellular Front End Challenges Part 3AN RFMD WHITE PAPER

RFMD.
Key Concepts Discussed: Power amplifier background.

3G/4G Multimode Cellular Front End Challenges
Part 3: Impact on Power Amplifier Design
Kevin Walsh and Jackie Johnson

Low Power Mode versus DC-DC converters: impact on battery current. Quadrature versus single-ended architectures.

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3G/4G Multimode Cellular Front End Challenges

Introduction
3G technologies are growing at