PWM with Differential Class-E Amplifier for Efficiency Enhancement at Back-Off Power Levels
2014 (English)In: 2014 IEEE 57TH INTERNATIONAL MIDWEST SYMPOSIUM ON CIRCUITS AND SYSTEMS (MWSCAS), IEEE , 2014, 607-610 p.Conference paper (Refereed)
A simplified output matching network for pulse width modulated Class-E Power Amplifier for efficiency enhancement at back-off power level is proposed. The shunt capacitance and the series inductance in the Class-E PA are realized through capacitor banks that are tuned according to the duty cycle to meet ZVS conditions. The differential PA design is implemented in 130 nm CMOS technology achieving maximum Pout of 24.8 dBm at 1.8 GHz with PAE better than 38% at 50% duty cycle. The output power is modulated with the input duty cycle and provides 6.2 dB back-off power level keeping PAE almost constant around 38%.
Place, publisher, year, edition, pages
IEEE , 2014. 607-610 p.
, Midwest Symposium on Circuits and Systems Conference Proceedings, ISSN 1548-3746
PWM; Class-E; LC lattice balun; Power Back Off(PBO); capacitor bank
Electrical Engineering, Electronic Engineering, Information Engineering
IdentifiersURN: urn:nbn:se:liu:diva-116529DOI: 10.1109/MWSCAS.2014.6908488ISI: 000350205800152ISBN: 978-1-4799-4132-2OAI: oai:DiVA.org:liu-116529DiVA: diva2:798837
57th IEEE International Midwest Symposium on Circuits and Systems (MWSCAS)