是否可以显示集总元件射频滤波器的节点电压？

S参数模拟是一种小信号分析，不会返回任何节点电压信息。
您需要执行直流分析或谐波平衡等非线性仿真，以查看直流节点电压信息。
如果要查看非直流频率的信号信息，则必须进行谐波平衡或瞬态仿真。
在这种情况下，通常情况下，这种直流模拟方式使用直流电源（如V_DC）来偏置电路。
使用Term仍然可以工作，但电压源与元件的内部参考阻抗串联，因此对于50欧姆的标称输入阻抗，只有一半的电压施加到被测电路，一半将在Term中被消除。



     以下为原文

  S-parameter simulation is a small signal analysis and will not return any nodal voltage information. You need to be performing a DC analysis or a non-linear simulation like Harmonic Balance to see DC nodal voltage information. If you want to see signal information at non-DC frequencies then you must be doing Harmonic Balance or Transient simulations.

In adition it is typical when doing this this style of DC simulation you would use a DC source, like a V_DC, to bias the circuit. Using the Term would still work but the voltage source is in series with the Internal Reference Impedance of the component so for a 50 Ohms nominal input impedance only half the voltage would be applied to the circuit under test and half would be disipated in the Term.

嗨，如果您对RF电压摆幅感兴趣，可以进行AC仿真。
只需在一侧放置一个源（！），在所有其他端口放置适当的终端（500欧姆），您将得到相应网络矩阵的匹配线（在电阻终端的情况下为S参数矩阵，短路导纳）
，...）。
这样，您可以分别查看电压摆幅，阻抗水平（v / i）甚至“本地”Sij。
只需通过“ztos（v / i）”之类的方式转换本地阻抗。
这允许在史密斯圆图上的级联设置中监视转换路径。
匹配设计中的典型应用之一。
基于AC仿真，您甚至可以计算部分/元素的功耗，从而构建复杂电路的损耗平衡。
当然，谐波平衡也允许所有提到的后处理步骤。
此致，托比



     以下为原文

  Hi,

if you're interested in the RF voltage swing, an AC simulation will do. Just place a single source (!) on the one side and proper terminations (50Ohm) on all other ports and you'll get the matching line of the corresponding network matrix (S-parameter matrix in case of resistive termination, admittance for short circuits, ...).

This way you can look at voltage swing, impedance level (v/i) and even "local" Sij, respectively. Just convert your local impedances via something like "ztos(v/i)" . This allows to monitor your transformation path in a cascaded setup on the Smith chart. One of the typical applications in matching design. Based on an AC simulation you can even calculate the power consumption of sections/elements an build the loss balance of a complex circuitry. 

Of course, harmonic balance does allow all the mentioned postprocessing steps, too.

Regards,
Toby

感谢Toby的建议。
我试一试。



     以下为原文

  Thanks for the advice Toby.  I'll give it a try.