微带隔直电路在微波频率上用来代替集总电容是相当有用的,特别是用在诸如振荡器电路的设计中。这种电路在文献已有介绍,他们用实验设计方法得到了宽带等波纹性能。最近,文献试图进行理论分析,将这种电路看成是一个耦合端和通过端都开路的三分贝定向耦合器,并预测有最大平坦特性。本文根据众所周知的切比雪夫变换损耗介 Microstrip DC blocking circuits are quite useful at microwave frequencies to replace lumped capacitors, especially in designs such as oscillator circuits. This kind of circuit has already been introduced in the literature, they used the experimental design method to get the broadband such as ripple performance. Recently, the literature attempts to make a theoretical analysis of this circuit as a coupled end and a three decibel directional coupler open both ends, and predicts the maximum flatness. This article is based on the well-known Chebyshev transform loss specification