Wolf, Greenfield & Sacks, P.C.
Envelope tracking supply modulator with zero peaking and associated envelope tracking calibration method and system
An envelope tracking supply modulator includes an amplifier circuit and a zero peaking circuit. The amplifier circuit receives an envelope input, generates a modulated supply voltage according to the envelope input, and provides the modulated supply voltage to a power amplifier. The zero peaking circuit is coupled to the amplifier circuit, and applies zero peaking to the amplifier circuit, where the zero peaking inserts a zero at a frequency.
MediaTek Inc.
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Yen-Liang Chien-Wei Chen-Yen
Chen Kuan Ho