不同集电极电压下功率放大器互调失真分析

2018 IEEE International Symposium on Radio-Frequency Integration Technology (RFIT) Pub Date : 2018-08-01 DOI:10.1109/RFIT.2018.8524080

Wei-Ting Tsai, Chong-Yi Liou, Zheng-An Peng, Shau-Gang Mao

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引用次数: 4

摘要

本研究提出一种采用不同集电极电压的功放线性化技术。对功率晶体管行为模型中的三阶互调项进行了分析，以证明采用不同集电极电压技术的功率放大器的三阶互调失真最小。通过实验和理论验证了这种降低功率放大器三阶互调失真的不同集电极电压技术。设计并实现了一种采用不同集电极电压技术的SiGe BiCMOS功率放大器。结果表明，该功率放大器的线性输出功率比固定电源电压的功率放大器高2.3 dB。

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Intermodulation Distortion Analysis for Power Amplifier with Various Collector Voltages

This study proposes a power amplifier with the various collector voltages technique to linearize the power amplifier. The third-order intermodulation term in the behavior model of the power transistor is analyzed to demonstrate the minimum third-order intermodulation distortion for the power amplifier with the various collector voltages technique. This various collector voltages technique for reducing the third-order intermodulation distortion of the power amplifier is experimentally and theoretically verified. A SiGe BiCMOS power amplifier with the various collector voltages technique is designed and implemented. Results demonstrate that the linear output power of the proposed power amplifier is 2.3 dB higher than the power amplifier with the fixed supply voltage.

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2018 IEEE International Symposium on Radio-Frequency Integration Technology (RFIT)

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