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Frequency-Domain Models for Nonlinear Microwave Devices Based on Large-Signal Measurements

机译:基于大信号测量的非线性微波器件频域模型

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摘要

In this paper, we introduce nonlinear large-signal scattering (?) parameters, a new type of frequency-domain mapping that relates incident and reflected signals. We present a general form of nonlinear large-signal ?-parameters and show that they reduce to classic ?-parameters in the absence of nonlinearities. Nonlinear large-signal impedance (?) and admittance (?) parameters are also introduced, and equations relating the different representations are derived. We illustrate how nonlinear large-signal ?-parameters can be used as a tool in the design process of a nonlinear circuit, specifically a single-diode 1 GHz frequency-doubler. For the case where a nonlinear model is not readily available, we developed a method of extracting nonlinear large-signal ?-parameters obtained with artificial neural network models trained with multiple measurements made by a nonlinear vector network analyzer equipped with two sources. Finally, nonlinear large-signal ?-parameters are compared to another form of nonlinear mapping, known as nonlinear scattering functions. The nonlinear large-signal ?-parameters are shown to be more general.
机译:在本文中,我们引入非线性大信号散射(?)参数,一种新型的频域映射,其涉及入射和反射信号。我们呈现了一般形式的非线性大信号? - 参数并表明他们减少到经典? - 在没有非线性的情况下的参数。非线性大信号阻抗(?)和入场(?)还引入了参数,并且导出了与不同表示相关的方程。我们说明了非线性大信号如何? - 参数可以用作非线性电路的设计过程中的工具,特别是单二极管1GHz频率倍增器。对于非线性模型不容易获得的情况,我们开发了一种提取非线性大信号的方法? - 用人工神经网络模型获得的参数,其具有由配备有两个来源的非线性矢量网络分析仪进行的多次测量。最后,非线性大信号? - 参数与另一种形式的非线性映射相比,称为非线性散射功能。非线性大信号? - 参数显示更多。

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