鳍状线是1972年P.J.Meier首先提出来的.它的基本结构如图1所示.将一段普通的矩形波导从正中沿??面切开,嵌入一块已经集成一定形状金属膜的介质基板,这样就构成了一条新的传输线.因为集成在介质基板上的金属膜很像鱼鳍,所以人们形象地都称这样的传输线为鳍状线.按照鳍的位置不同,鳍状线可以做成双边鳍状线(图1a);单边鳍状线(图1b);对极鳍状线(图1c).由于这三种鳍状线的金属 The fin line was first proposed by PJMeier in 1972. Its basic structure is shown in Figure 1. An ordinary rectangular waveguide is cut along the plane from the median to embed a dielectric substrate into which a certain shape of the metal film has been integrated, This constitutes a new transmission line because the metal substrate integrated in the media like a fish fin, so people vividly call such a transmission line for the fin line.According to the location of the fin, the fin line can be made bilateral Fin line (Figure 1a); unilateral fin line (Figure 1b); polar fin line (Figure 1c). As the three kinds of fin wire metal