High-efficiency OFDM power amplifier system Using a new polar modulation technique

被引：0
|
作者：
Ishioka, Ryota [1 ]
Kimura, Tomotaka [1 ]
Muraguchi, Masahiro [1 ]
机构：
[1] Tokyo Univ Sci, Fac Engn, Tokyo, Japan
来源：
PROCEEDINGS OF THE 2016 IEEE REGION 10 CONFERENCE (TENCON) | 2016年
关键词：
Power amplifier; polar modulation; cascode amplifier; OFDM; IEEE; 802.11g;
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 presents a high-efficiency OFDM power amplifier system using a new polar modulation technique. Proposed amplifier system employs a current control by changing the common-gate stage bias in a cascode amplifier. The input signal is separated into the phase component for a quadrature modulator and amplitude component for an output power controller. Here, some modification of the amplitude component is required. In contrast to our system, traditional polar modulation systems employ a power supply modulator to control output power. The proposed OFDM amplifier system exhibits overall efficiency of 41.3 % at -25dB EVM which satisfies the requirement of IEEE 802.11g specification.
引用
收藏
页码：2521 / 2524
页数：4
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