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首页> 外文期刊>IEEE Transactions on Electron Devices >Analog Predistortion Linearizer With Independently Tunable Gain and Phase Conversions for Ka-Band TWTA
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Analog Predistortion Linearizer With Independently Tunable Gain and Phase Conversions for Ka-Band TWTA

机译:具有Ka-Band TWTA的独立可调增益和相位转换的模拟预失真线性化器

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摘要

Analog predistortion (APD) is an effective technique to improve the linearity of the traveling-wave tube amplifier (TWTA). This paper presents a novel APD linearizer with independently tunable gain and phase conversions. Based on symmetrical dual-branch vector synthetic topology, which avoids introducing the additional delay line, this linearizer achieves a simple circuit structure. Independent tuning of gain and phase conversions of this linearizer is realized by changing the bias voltages of the two branches. Theoretical analysis and tuning process of this linearizer are discussed in detail. Simulated and measured results are in a good agreement, and both of them verify that this linearizer has the independent tuning ability. Furthermore, a 250-W Ka-band TWTA is linearized by this linearizer, and the measurement results demonstrate the effectiveness of this linearizer in TWTA linearization.
机译:模拟预失真(APD)是提高行波管放大器(TWTA)线性度的有效技术。本文提出了一种新颖的APD线性化器,具有独立可调的增益和相位转换。该线性化器基于对称的双分支矢量合成拓扑,可避免引入额外的延迟线,从而实现了简单的电路结构。该线性化器的增益和相位转换的独立调谐是通过改变两个分支的偏置电压来实现的。详细讨论了该线性化器的理论分析和调整过程。仿真结果和测量结果吻合良好,并且两者均证明该线性化器具有独立的调谐能力。此外,该线性化器将250W Ka波段TWTA线性化,测量结果证明了该线性化器在TWTA线性化中的有效性。

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