Details

Autor(en) / Beteiligte

• Walling, Jeffrey S.

Titel

The Switched-Capacitor Power Amplifier: A Key Enabler for Future Communications Systems

Ist Teil von

• ESSCIRC 2019 - IEEE 45th European Solid State Circuits Conference (ESSCIRC), 2019, p.18-24

Ort / Verlag

IEEE

Erscheinungsjahr

2019

Quelle

IEEE Xplore

Beschreibungen/Notizen

• In this paper, power amplifiers in CMOS technologies are reviewed including traditional PAs and the digital power amplifier (DPA). DPAs embed the functionality of an up-conversion mixer and digital-to-analog converter (DAC) in the PA. Hence a more appropriate label for DPAs is RF-Power-DACs. The "Switched-Capacitor Power Amplifier" (SCPA) is highlighted due to its potential to transform future communications networks because of its small-size, high linearity, and high efficiency. Because the SCPA (and other DPAs) can directly interface with digital signals while outputting RF signals, it is a flexible mixed-signal interface circuit that does not require a large baseband filter. Several recent innovations in the SCPA that enable it to be reconfigured digitally across multiple frequency bands and to be used in beamforming/MIMO transceivers are highlighted.