Foley & Lardner LLP
Feedback amplifier as an impedance modulator for a linear power amplifier
A power amplifier and power amplification circuit are described herein. An illustrative power amplifier is disclosed to include an input terminal, a drive amplifier connected to the input terminal, and an impedance modulator having a capacitance that is adjusted inversely and proportionately relative to a signal output by the drive amplifier, wherein the impedance modulator provides a feedback loop between an output of the drive amplifier and the input terminal.
Avago Technologies International Sales Pte. Limited
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Un-Ha Joo Young Seung Yub Jun Hee
Kim Jeon Lee Oh