Comments on Reply to Comments on "Wideband coupled-line microstrip filters with high-impedance short-circuited stubs"

In this short communication we want to discuss the reply given in [1] to our comments in [2]. In [2], we analyzed and corrected the equation proposed in [3] to compute the equivalent characteristic impedance of a short-circuited coupled-line section [Fig. 1(a)], but in [1], the same authors maintain that theory in [3] is correct. Therefore, in this work the analytical equation obtained in [2] is assessed and compared to the equation given in [1], [3] with the help of an electromagnetic solver based on the method of moments.