Design of monolithic silicon-based envelope-tracking power amplifiers for broadband wireless applications

Donald Y.C. Lie, Yan Li, Ruili Wu, Weibo Hu, Jerry Lopez, Cliff Schecht, Yenting W. Liu

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

This paper presents some design insights on achieving a fully monolithic silicon-based radio frequency (RF) power amplifier (PA) using the envelope-tracking (ET) techniques for low-power broadband wireless applications. We will show that from our design experience, the highly integrated BiCMOS envelope-tracking power amplifier (ET-PA) system provides considerable efficiency-linearity enhancement, and works well with impressive power-saving for broadband 3G/4G cellular signals of high peak-to-average ratio (PAR). We will also demonstrate that further performance improvement of the fully monolithic BiCMOS ET-PA can be accomplished by: (1) combination of ET and transistor resizing techniques at the low output power regions; and (2) utilizing the ET technique with on-chip transformer power-combined SiGe PA for higher linear output power. For example, the fully monolithic BiCMOS ET-PA reaches the maximum linear output power (Pout) of 22.3/24.3 dBm with the overall power-added-efficiency (PAE) of 33%/42% at 2.4 GHz for the WiMAX 64QAM and the 3GPP LTE 16QAM modulations, respectively, without needing predistortion. Additionally, it can exhibit a highly efficient broadband characteristic for potential multi-band applications.

Original languageEnglish
Title of host publication2012 IEEE Asia Pacific Conference on Circuits and Systems, APCCAS 2012
Pages212-215
Number of pages4
DOIs
StatePublished - 2012
Event2012 IEEE Asia Pacific Conference on Circuits and Systems, APCCAS 2012 - Kaohsiung, Taiwan, Province of China
Duration: Dec 2 2012Dec 5 2012

Publication series

NameIEEE Asia-Pacific Conference on Circuits and Systems, Proceedings, APCCAS

Conference

Conference2012 IEEE Asia Pacific Conference on Circuits and Systems, APCCAS 2012
Country/TerritoryTaiwan, Province of China
CityKaohsiung
Period12/2/1212/5/12

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