Class-E power amplifier in a polar EDGE transmitter

被引：8
|
作者：
Lopez, Nestor D. [1 ]
Jiang, Xufeng [1 ]
Maksimovic, Dragan [1 ]
Popovic, Zoya [1 ]
机构：
[1] Univ Colorado, Dept Elect & Comp Engn, Boulder, CO 80309 USA
来源：
2006 IEEE MTT-S INTERNATIONAL MICROWAVE SYMPOSIUM DIGEST, VOLS 1-5 | 2006年
关键词：
envelope elimination and restoration; envelope tracking; envelope amplifier; power amplifiers; class-E amplifier; EDGE;
D O I：
10.1109/MWSYM.2006.249771
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 presents the design and characterization of a 880-MHz class-E power amplifier (PA) designed to operate in a polar transmitter for EDGE signals. The amplifier is intended to be supplied from a 3.6V battery using a linear amplifier as an envelope tracker, which limits the maximum drain voltage to 3.3 V. With a +7.6 dBm input signal the maximum output power (V-DD = 3.3V) is +22.4 dBm With 14.9 dB of gain, a drain efficiency of 71.6% and PAE of 69%. An output power dynamic range of 15.4 dB is achieved when the voltage is varied from 0.5-3.3 V. Taking into account the statistics of an EDGE signal, the mean drain efficiency and PAE are 75.7% and 64.4%, with a mean output power of +18.26dBm.
引用
收藏
页码：785 / 788
页数：4
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