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Transformer-based class-E CMOS PA with shunt LC network
Conference proceeding

Transformer-based class-E CMOS PA with shunt LC network

Alfred Lim, Kaixue Ma, Zhi Hui Kong and Kiat Seng Yeo
2015 International SoC Design Conference (ISOCC), pp.205-206
01/11/2015
DOI: https://doi.org/10.1109/ISOCC.2015.7401783

Abstract

class-E CMOS CMOS integrated circuits Inductors Power amplifiers Power generation Resistance shunt LC network Shunts (electrical) Switching circuits transformer-based
This paper proposes a transformer-based class-E CMOS power amplifier (PA) with shunt LC network. The conventional class-E PA circuits contains a series inductor and capacitor in the load network; the proposed class-E PA was realized only with a pair of inductor and capacitor connected in shunt at the output load network. The shunt network exhibits a higher quality factor Q with a finite value of shunt inductor. Therefore, the presence of the higher order of harmonics in the output can be further suppressed and thus reducing the series resistance imposed by the shunt inductor. As a result, the efficiency is enhanced for a given output power.

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