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The IMD cancellation characteristics of predistortion linearizer in microwave transistor

机译：微波晶体管中预失真线性化器的IMD消除特性

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摘要

A predistortion linearizer, the method that IMD signals are combined at the input port of the amplifier, because of its small size and good efficiency is frequently used in high power amplifier linearizer system. The amount of IMD signal cancellation by adjusting the amplitude and phase of predistorter is investigated by new experiment method. In the combining method of predistorter type, the magnitude and phase of combining signals cannot be easily expected due to different magnitude and phase of incoming signals. By experiment, it is measured that a predistortion linearizer has lower amounts of IMD signal cancellation than those of the parallel cancellation method at the same condition (amplitude and phase).
机译：预失真线性化器，即IMD信号在放大器的输入端口处合并的方法，由于其尺寸小且效率高，在高功率放大器线性化器系统中经常使用。通过新的实验方法研究了通过调节预失真器的幅度和相位来消除IMD信号的数量。在预失真器类型的组合方法中，由于输入信号的大小和相位不同，所以不容易期望组合信号的大小和相位。通过实验测量，在相同条件（幅度和相位）下，预失真线性化器的IMD信号消除量要比并行消除方法的IMD信号消除量低。

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