CMOS Envelope Tracking amplifier IC design for high-efficiency RF polar transmitters

Po Hsing Wu, Yan Li, Weibo Hu, J. Lopez, Donald Y.C. Lie, T. J. Liang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

A monolithic polar transmitter (TX) subsystem that includes a CMOS Envelope Tracking (ET) amplifier and a RF SiGe BiCMOS power amplifier (PA) for mobile WiMAX applications is presented. Several versions of the ET amplifiers are designed and their power consumption and bandwidth considerations are discussed. Consequently, the entire polar TX system performances and design trade-offs are presented and compared against different ET amplifiers design. The IC occupies a total area of 11.4 mm2 and is being fabricated in a TSMC 0.35m SiGe BiCMOS process. RF/Analog/Digital system co-simulation indicates that the overall ET-based polar TX system exhibits 30% Power-Added-Efficiency (PAE) and 4.6% Error Vector Magnitude (EVM) at 19dBm PA output power and passes the stringent output spectral mask for a 10 MHz mobile WiMAX 64QAM signal with 10dB Peak-to-Average-Power Ratio (PAR).

Original languageEnglish
Title of host publication2011 IEEE International Symposium of Circuits and Systems, ISCAS 2011
Pages197-200
Number of pages4
DOIs
StatePublished - 2011
Event2011 IEEE International Symposium of Circuits and Systems, ISCAS 2011 - Rio de Janeiro, Brazil
Duration: May 15 2011May 18 2011

Publication series

NameProceedings - IEEE International Symposium on Circuits and Systems
ISSN (Print)0271-4310

Conference

Conference2011 IEEE International Symposium of Circuits and Systems, ISCAS 2011
CountryBrazil
CityRio de Janeiro
Period05/15/1105/18/11

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    Wu, P. H., Li, Y., Hu, W., Lopez, J., Lie, D. Y. C., & Liang, T. J. (2011). CMOS Envelope Tracking amplifier IC design for high-efficiency RF polar transmitters. In 2011 IEEE International Symposium of Circuits and Systems, ISCAS 2011 (pp. 197-200). [5937535] (Proceedings - IEEE International Symposium on Circuits and Systems). https://doi.org/10.1109/ISCAS.2011.5937535