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This paper presents a systematic methodology to design a diode-based RF predistorter that can linearize power amplifiers with dual inflection points in their distortion characteristics. The proposed structure contains an anti-parallel configuration of Schottky diodes, with a PIN diode in parallel, connected to a hybrid using λ/4 transmission lines. The proposed linearizer when applied to a commercial...
A novel time-difference amplifier (TDA) is presented. The proposed circuit has a larger linear operation region with less sensitivity to process variations than the state-of-the-art TDAs. Two TDAs with gains of two and 20 have been simulated in a 65 nm CMOS process to validate the proposed architecture. Simulation results show less than 0.1% gain error for ±400 ps input time difference range, ten...
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