Characterization of devices operating under large signal conditions at nonlinear regions requires specific measurement setups since the output power value, operation efficiency, power gain, and linearity are functions of the source impedance, input signal level, biasing values, and load impedance. Hence, measuring a device’s parameters while varying the source or load impedance (called source-pull and load-pull , respectively) is essential to evaluate its nonlinear behaviors.

中文翻译：

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用于负载牵引设置的无反射高通滤波器：无反射高通滤波器提高了负载牵引测量的稳定性

在非线性区域的大信号条件下工作的器件的表征需要特定的测量设置，因为输出功率值、工作效率、功率增益和线性度是源阻抗、输入信号电平、偏置值和负载阻抗的函数。因此，在改变源或负载阻抗（称为源拉取和分别是负载拉力）对于评估其非线性行为至关重要。