A Class-G Switched-Capacitor RF Power Ampli fier Sang-Min Y oo Member IEEE Jeffr

Abstract

A switched-capacitor power ampli fier (SCPA) that realizes an envelope eliminatio n and restoration/polar class-G topology is introduced. A novel vol tage-tolerant switch enables the use of two power supply voltages which increases ef ficiency and output power simultaneously. Enve lope digital-to-analog conver- sion in the polar transmitter is achieved using an SC RF DAC that exhibits high ef ficiency at typical output power backoff levels. In addition, high linearity is achiev ed and no digital pr