Differentially coupled outphasing WCDMA transmitter with inverse class F power amplifiers

W. Gerhard, R. Knoechel
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引用次数: 12

Abstract

This paper presents design and practical implementation of an outphasing WCDMA transmitter with highly efficient inverse class F packaged LDMOS power amplifiers (PA's). Both PA's are modeled as phase-modulated voltage sources connected in series, being differentially coupled at the output. The implementation of differential coupling with voltage sources is an alternative to the conventional design. The circuit operates as theoretically predicted. A peak power of 24 W with a peak drain efficiency of 61% and for a 5 dB PAR (peak to average ratio) QPSK signal a drain efficiency of 32 % is reported. The performance of the transmitter and measurement results are presented.
带反F类功率放大器的差分耦合共相WCDMA发射机
本文介绍了一种采用高效反F类封装的LDMOS功率放大器(PA)的反相WCDMA发射机的设计和实际实现。两个放大器都被建模为串联的相位调制电压源,在输出端差分耦合。差分耦合与电压源的实现是传统设计的替代方案。电路按理论上预测的那样工作。据报道,峰值功率为24 W,峰值漏极效率为61%,对于5db PAR(峰值与平均比)QPSK信号,漏极效率为32%。介绍了发射机的性能和测量结果。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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