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为了确定微波滤波器的插入损耗,有必要测定特定类型的微带线有效介电常数和特性阻抗。图1所示的微带线是由安装在绝缘介质板上的金属条组成,而介质板又悬浮在接地板上面。
In order to determine the insertion loss of a microwave filter, it is necessary to determine the effective dielectric constant and the characteristic impedance of a particular type of microstrip line. The microstrip line shown in Figure 1 consists of a metal strip mounted on an insulating dielectric plate, which in turn is suspended above the ground plane.