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您好专家,我将模拟具有大信号条件的晶体管模型的s12;
像热参数测量一样。 我目前正在使用示例中的大信号放大器原理图。 http://edocs.soco.agilent.com/di ... plifier+Simulations问题是我的晶体管还没有与50欧姆相匹配,而且我要根据它的s12行为来匹配它。 所以我考虑用调谐功能改变术语的阻抗,以找到所需的阻抗。 但有了这个,有必要重新规范计算的s参数。 为了做数学,我必须建立一个包含所有4个s参数的s矩阵。 是否可以将计算出的s值合并到矩阵中,然后对其进行一些数学计算,如计算逆矩阵并乘以另一个矩阵。 我知道如何使用带变量的方程,但我需要一些向量代数。 我很高兴收到你的来信,谢谢你提前 以上来自于谷歌翻译 以下为原文 Hello experts, I've to simulate the s12 of a transistor model with large signal conditions; like a hot-s-parameter-measurement. I'm currently using the schematic for large signal amplifiers from the examples. http://edocs.soco.agilent.com/di ... plifier+Simulations The problem is my transistor is not yet matched to 50 Ohms and I've to match it with respect to its s12 behavior. So i thought about changing the impedance of the terms with the tuning function to find the desired impedance. But with this it is necessary to re-normalize the calculated s-parameters. To do the math i have to build up a s-matrix with all 4 s-parameters. Is it possible to merge the calculated s-values to a matrix and then do some math with it, like calculating the inverse matrix and multiply with another matrix. I know how to use equations with variables, but i need some vector algebra. I would be glad to hear from you, thank you in advance |
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***5 发表于 2019-3-5 11:44 Hallo aehoward,谢谢你的帮助。 我将看一下Tutorial / express_meas_wrk示例。 热s参数测量中的所有因变量变得非常复杂。 我也考虑过负载牵引测量,但我需要找到一个复杂的晶体管源和负载匹配,并且在进行匹配时我必须查看我的dut的s12行为。 负载牵引或源拉力测量不会向我提供这些信息。 而且,重新规范化的数学基本上并不那么难。 问题是让ADS用变量中的正确值进行计算,因为它们取决于功率和频率。 我基本上需要的是向晶体管显示一些阻抗,观察它的行为。 对我来说最重要的值是热s参数。 很难得到那些。 提前致谢 以上来自于谷歌翻译 以下为原文 Hallo aehoward, thanks for your help. I'll have a look at the Tutorial/express_meas_wrk example. It becomes very complex with all the dependent variables out of the measurement for hot s-parameters. I thought about a load pull measurement too, but I need to find a complex matching for source and load of the transistor and while doing the matching i have to look at the s12 behavior of my dut. The load pull or source pull measurement does not provide these informations to me. Moreover, the math for re-normalization is basically not that hard. The problem is to get ADS to calculate with the right values out of the variables, as they are power and frequency dependent. What I basically need is to show some impedance to the transistor an watch its behavior. Most important values for me are the hot s-parameters. Quite hard to get those. thanks in advance |
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