这段文字是什末意思?Transient Analysis of Circuits IncludingFrequency-

这段文字是什末意思?
Transient Analysis of Circuits Including
Frequency-Dependent Components Using
Transgyrator and Convolution
Frequency-domain characteristics,such as dispersion and frequency-dependent losses,affect the behaviour of a circuit strongly.The method we intend to present here is based on the partition of a circuit into a linear and a nonlinear part in a way similar to that used in the harmonic balance technique (see Fig.1).In the implementation of this method that has been done for the APLAC circuit simulation software the separation of the circuit is done by the user.The nonlinear part should contain components that have a time-domain model.The linear part should contain all components that are defined in the
frequency domain,i.e.,that have a frequency-domain model.Although time-domain
models exist for many frequency-dependent components,such as microstrips and
coupled line pairs,these models mostly cannot take frequency-domain characteristics
accurately into account.Therefore,in order to obtain an accurate representation
of these components,this method uses the frequency-domain models directly and
based on these creates an equivalent time-domain representation that contains the
frequency-domain characteristics.The linear part forms an n-port,for which we
intend to present an accurate time-domain representation.This is done by using
the Fourier transform to obtain the impulse response functions that represent the
y-parameters of the n-port in the time domain.
The input voltage pulse is shown in Fig.11.Although there is only one source,
we should expect the coupling between the microstrip lines to cause some voltage
waveform at both loads.As explained above,Mclin allows us to verify our results
(as long as no frequency-domain characteristics are taken into account) with normal
transient analysis.The results are,as expected,exactly the same.Fig.12 shows the
voltage waveforms at the coupled line load,obtained by normal transient analysis
and by transient analysis using convolution.Both graphs are identical (they coincide,
as can be seen from the markers).When the frequency-domain characteristics
are taken into account,which means that the y-parameters obtained for the n-port
used in our method are affected by dispersion and frequency-dependent losses,the
results change noticeably.Since the Mclin frequency-domain model is capable of
taking into account all the frequency-domain characteristics in an AC analysis,we
are able to obtain the y-parameters that we need through consequent AC analyses
at different frequencies using APLAC.The result presented in Fig.13 shows that
the coupled line load voltage waveform clearly becomes more \rounded" and that
its amplitude decreases when the frequency-domain characteristics are taken into
account.This could be expected,since at higher frequencies we are confronted with
larger losses.Dispersion affects the waveform so that it becomes smoother.

态电路分析包括频率依赖组件使用transgyrator卷积和频域特性,例如色散和频率相关的损失,影响行为的动力电路strongly.the方法,我们打算在这里是以 对分配一个电路到线性和非线性的参与方式相同,都是用来 在谐波平衡法(见图.1 ) .在实施这一办法,已经做了aplac电路仿真软件分离的制度 电路是由用户.非线性部分应包含有时间域模型.直线部分应包含所有部件,并在频域定义,即有频域模型.虽然时间域模型存在很多频率依赖组件,如微带耦合线成双 这些模型大多不能采取频域特点准确进去.因此,为了获得准确反映这些组件,这种方法采用了频域模型直接和基于这些创造相等时域代表性,含有频域 特色.线性形式的N端口,我们打算提出一个准确的时间域代表性.这样做的傅立叶变换得到脉冲响应函数,代表Y参数的 n个港口,在时间域.输入电压脉冲列无花果.11 .虽然只有一个来源,我们应该期望之间的耦合微带线,造成一些波形在载荷.如上所述,mclin让我们以核实我们的结果(只要没有频域特点是顾及) ,与正常的瞬间 分析.结果,一如预期,完全相同.无花果.12显示了波形的耦合线路负载 获得正常的瞬态分析和瞬态分析的卷积.两图都是相同的(他们不谋而合,这可从阅卷) .当频域特点是顾及 这意味着Y参数得到的N个港口,用我们的方法受色散和频率依赖性损失 结果出现明显变化.自mclin频域模型,它能够考虑到所有的频域特点,在交流分析 我们能够得到的Y参数,我们需要通过相应的交流分析,以不同的频率使用aplac .结果列于无花果.13显示耦合线电压波形显然更为\圆圆" ,它的幅度下降,当 频域特性的考虑.这可以预期,因为在更高频率,我们面临着较大的损失.色散影响的波形,使之变得更加顺滑.