Experimental performance of an adaptive digital linearized power amplifier (for cellular telephony)
Experimental performance of an adaptive digital linearized power amplifier (for cellular telephony)
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DOI：
10.1109/25.182589
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发表时间：
1992-11
影响因子：
6.8
通讯作者：
A. Wright;W. G. Durtler
中科院分区：
文献类型：
--
作者：
A. Wright;W. G. Durtler
高功率放大器放大线性调制方案（表现出波动包络）总是导致失真和互调产物的产生。最近的理论研究表明，复合增益预失真器可以用于非线性功率放大器的线性化。实验结果表明，采用数字反馈和复合增益预失真器可以使带外频谱减少20 dB以上。>
Amplification of linear modulation schemes, (which exhibit fluctuating envelopes), by high power amplifiers invariably leads to the generation of distortion and intermodulation products. Recent theoretical work has suggested that a complex gain predistorter may be employed to linearize a nonlinear power amplifier. The authors present experimental results demonstrating that a reduction in out-of-band spectra in excess of 20 dB may be achieved by employing digital feedback and a complex gain predistorter. >