[1]李嗣范,倪可权.二路线性可逆微波网络散射参量图解法[J].东南大学学报(自然科学版),1964,6(4):53-62.[doi:10.3969/j.issn.1001-0505.1964.04.006]
 [J].Journal of Southeast University (Natural Science Edition),1964,6(4):53-62.[doi:10.3969/j.issn.1001-0505.1964.04.006]
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二路线性可逆微波网络散射参量图解法()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
6
期数:
1964年第4期
页码:
53-62
栏目:
本刊信息
出版日期:
1964-12-20

文章信息/Info

作者:
李嗣范倪可权
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关键词:
散射参量 反射系数 图解法 透视中心 单位圆 微波网络 侧平面 短路活塞 网格 四点交比
分类号:
+
DOI:
10.3969/j.issn.1001-0505.1964.04.006
摘要:
二路线性可逆微波网络的输入端反射系数Γ_1是输出端反射系数Γ_2的分式线性写象,线性分式的系数就是网络的散射参量。线性分式共形写象把Γ_2平面上的圆和直线变换成Γ_1平面上的圆和直线。A.Weissfloch指出在直线-直线情况下存在透视中心和AB线。本文利用四点交比定理论证了圆-圆和直线-圆二种情况下也存在透视中心和AB线,并且提出确定透视中心和AB线的方法。然后在这个理论基础上提出了微波网络散射参量实验数据的处理方法。文内列举短路活塞法,可变电阻法,散射参量合成法和散射参量分解法等四个数据处理的例子。其中用短路活塞法求出的散射参量与G.A.Deschamps提出的多点平均法结果相同,但其它三种方法是G.A.Deschamps方法所不能解决的。
Abstract:
SUMMARY Reflection coefficient Γ_1 in input terminal plane of a two-port,linear,reci- procal microwave network is a linear fractional transformation of reflection co- efficient Γ_2 in output terminal plane.The constants of the linear fractional trans- formation Depend upon the scattering coefficients of a network.A linear frac- tional transformation mapa circles and straight lines in one planes into circles and straight lines in another plane.A.Weissfloch proved that between two straight lines,there exist two perspective centers and a straight line AB,from which image point on straight line in one plane can be located graphically if point on straight line in another plane is given.By means of theorem of cross ratio the paper proves that between two circle,or between a circle in one plane and a straight line in another plane,there also exist two perspective centers and a straight line AB, from which the scattering coefficients of a microwave network may be evaluated graphically by several ways.In this paper four examples are given.They are short-circuit method,variable resistive-load method,scattering coefficients com- bination method and scattering coefficients division method.The result obtained by short-circuit method is same as that given by G.A.Deschamps.

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更新日期/Last Update: 2013-05-01