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A novel feedback bias technique for a multistage cascode topology is developed to improve the linearity and reliability of power amplifiers (PAs). Due to the large parasitic capacitance and low substrate resistivity of CMOS technology, signal swings are coupled between the ports of transistors. The proposed method utilized the RF leakage signals at the gate of common-gate (CG) transistor in a cascode...
A highly efficient CMOS linear power amplifier for WCDMA applications with feedback bias technique is presented. The method involves connecting the gates of common-gate devices of the driver stage and the power stage in cascode configurations by a feedback network for enhancing linearity. To achieve high efficiency and linearity simultaneously, large-signal IMD minimum (IMD sweet spot) is properly...
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