@inproceedings{c98091a970124617ba8bdef1001acc55,
title = "A highly-efficient RF polar transmitter using SiGe power amplifier and CMOS envelope-tracking amplifier for mobile WiMAX",
abstract = "This paper presents a large-signal envelope-tracking (ET) polar transmitter (TX) system with a monolithic cascode SiGe power amplifier (PA) for mobile WiMAX applications. The envelope amplifiers are designed in the TSMC 0.35μm SiGe BiCMOS technology and also with discrete components for comparisons. The entire polar TX system using the discrete envelope amplifier in measurement achieves the power-added efficiency (PAE) of 30% at the average output power of 18 dBm with the EVM of 5% for WiMAX 64QAM 10 MHz signal. The RF/analog/digital co-simulations of the entire polar TX system with the integrated CMOS envelope amplifier show similar linearity and efficiency performances when compared with the measurement results. Both the simulation and measurement data suggests our polar TX design achieves the highest PAE among the state-of-the-art Si-based OFDM polar TX systems reported in the literature.",
author = "Yan Li and Wu, {Po Hsing} and Jerry Lopez and Ruili Wu and Lie, {Donald Y.C.} and Kevin Chen and Stanley Wu and Yang, {Tzu Yi}",
year = "2011",
doi = "10.1109/VDAT.2011.5783610",
language = "English",
isbn = "9781424484997",
series = "Proceedings of 2011 International Symposium on VLSI Design, Automation and Test, VLSI-DAT 2011",
pages = "200--203",
booktitle = "Proceedings of 2011 International Symposium on VLSI Design, Automation and Test, VLSI-DAT 2011",
note = "2011 International Symposium on VLSI Design, Automation and Test, VLSI-DAT 2011 ; Conference date: 25-04-2011 Through 28-04-2011",
}