A reconfigurable SiGe HBT for wideband step envelope tracking power amplifiers

被引：0
|
作者：
Cidronali, A. [1 ]
Magrini, I. [1 ]
Fagotti, R. [1 ]
Alimenti, F. [2 ]
Koether, D. [3 ]
Manes, G. [1 ]
机构：
[1] Univ Florence, Dept Elect & Telecomm, VS Marta 3, I-50139 Florence, Italy
[2] Univ Perugia, Elect & Informat Engn Dept, I-06125 Perugia, Italy
[3] IMST GmbH, RF Test Center, D-47475 Kamp Lintfort, Germany
来源：
2007 EUROPEAN MICROWAVE INTEGRATED CIRCUITS CONFERENCE, VOLS 1 AND 2 | 2007年
关键词：
envelope tracking; reconfigurable devices; SiGeHBT;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
This paper discusses and experimentally demonstrates the use of a reconfigurable class-AB power amplifier in a wideband step envelope tracking architecture. The experimental results are related to a SiGe HBT power device prototype in which we integrated the dynamic biasing switching capability. This paper proves that, in the case of 802.11g signals, the prototype allows for an average efficiency of 16.5%, which represents an increase of 10% if compared with traditional class-AB RFPA. The step envelope tracking architecture and its digital predistortion algorithm are discussed and analyzed by system level simulations, which demonstrate the capability of the SiGe prototype to provide 19 dBm output total power with EVM=3.4%.
引用
收藏
页码：185 / +
页数：2
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