Third-Harmonic Envelope Feedback Method for High-Efficiency Linear Power Amplifiers
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概要
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A new low-power feedback structure for a power amplifier (PA) reduces signal distortion while keeping the power efficiency of the PA high. The feedback structure injects the envelope of the third-order harmonics into the input signal. In adopting this method for a class-A amplifier, we obtain over 10% higher efficiency while maintaining the same adjacent channel power ratio (ACPR). The power consumption of additional circuit is 200µW.
著者
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Ugajin Mamoru
Ntt Microsystem Integration Laboratories
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OSHIMA Shoichi
NTT Microsystem Integration Laboratories
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HARADA Mitsuru
NTT Microsystem Integration Laboratories
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