双口网络有效互连的判据和实现

一些功能不同的双口网络适当地连接在一起会实现某种特定的功能.双口网络间的连接方式有：串联、并联、串-并联、并-串联和级联.除级联方式外,其它互连方式都存在有效互连的问题,只有在有效连接的情况下,讨论双口网络的参数矩阵与各分双口网络参数矩阵的关系才有意义.以双口网络的串联连接为例,证明了双口网络有效互连与端口有效性检查互为充要条件的结论,并给出了当互连的双口网络不满足有效连接判据时如何实现有效连接.这对双口网络互连的教学具有一定的帮助.

Criterion and Realization of Effective Interconnection of Two-Port Networks

Two-port networks with different functions are interconnected to yield the expected function.The types of interconnection of two-port networks are: series,parallel,series-parallel,parallel-series and cascade connection.Effectiveness of interconnection exists in all the forms of the interconnection except cascade connection.When the interconnection is effective,it is meaningful for the relationship between the parameters of interconnected two-port networks and the parameters of individual two-ports networks.Series connection of two-port networks is taken as an example to prove that the port test of effectiveness is necessary and sufficient for the interconnection of two-port networks.The realization of the effective interconnection of two port networks is also given.It is helpful for the teaching of interconnection of two-port networks.