A High-Accuracy Metric for Predicting the Power De-Rating of RF Power Amplifiers

被引：2

作者：

Zhang, Xiangyin ^{[1
]}

Zhu, Xiaodong ^{[1
]}

Liu, Ying ^{[1
]}

Tang, Youxi ^{[1
]}

机构：

[1] Univ Elect Sci & Technol China, Natl Key Lab Sci & Technol Commun, Chengdu 610054, Peoples R China

来源：

IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS | 2015年 / 25卷 / 05期

基金：

中国国家自然科学基金;

关键词：

Cubic metric (CM); peak-to-average power ratio (PAPR); power de-rating; RF power amplifiers (PA); COMPLEX GAUSSIAN-PROCESSES;

D O I：

10.1109/LMWC.2015.2409983

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：

Cubic metric (CM) is being recognized as a better alternative to determine the power de-rating of radio frequency power amplifiers (PAs) than peak-to-average power ratio (PAPR). However, in this letter our analysis shows that actually the CM is still inaccurate to predict the required PA power de-rating that satisfies the out-of-band radiation (OBR) requirement of a communication system. Further, by investigating the effect of the third-order nonlinearity of PA on the OBR, we propose a novel metric. Compared with PAPR and CM, the proposed metric has a strong correlation with the OBR, and thus it provides much higher accuracy in determining the required power de-rating of PAs, which is verified by extensive experimental results.

引用

页码：346 / 348

页数：3

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