CMOS Power Amplifier with Efficiency Enhancement in Linear application

Power amplifiers are a key part of the transceiver, which consumes the largest part of power. Therefore,designing a high efficiency RF power amplifier might be the best solution to cope with the problem of batterylifetime limitations in portable systems. In the design of transceiver, because of the high linearity and high efficiencyClass AB widely is used. In this paper, the designed circuit in Agilent ADS software is implemented using 0.18 μmRFCMOS technology at 3.3 v supply voltage. The measured results indicate that power added efficiency, outputpower and power gain of the proposed class AB power amplifier at frequency of 900MHz are 33%, 34dBm and25dBm.

کلیدواژه ها:

power amplifier ، efficiency ، linearity ، gain