关于互易二端口的若干思考  

Several Notes on Reciprocal Two-ports

作　　者：于歆杰[1] 

机构地区：[1]清华大学电机工程与应用电子技术系,北京100084

出　　处：《电气电子教学学报》2011年第5期24-27,107,共5页Journal of Electrical and Electronic Education

摘　　要：本文首先介绍了当前教材中通行的四种定义互易二端口的方法。作者从互易的含义出发,给出基于端口变量关系的互易二端口定义,并指出这种定义与基于二端口参数的定义是等价的。进而讨论了互易性元件的定义,说明互易定理的实质内容为仅由互易元件构成的二端口一定是互易二端口,并指出这是互易二端口的充分条件。最后还讨论了互易性和无源性之间的关系。Starting by ntroducing four common definitions on reciprocal two-ports, this paper provides the essential consideration on the word reciprocal and thus deduces the definition based on the port variables. Then this definition is proved to be equivalent to the definition based on the two-port parameters. The definition of the reciprocal element has then been given. The author also introduces that the reciprocal theorem is actually the simple statement that two-ports constituted by reciprocal elements are reciprocal and points out that it is only the sufficient condition for reciprocal two-ports. The relationship between reciprocal two-ports and passive two-ports has also been discussed.

关 键 词：互易二端口 互易定理 互易元件 

分 类 号：TM13[电气工程—电工理论与新技术]