Patent ID: 6255920
Filing Date: 2001-07-03
Classification: H01P

Abstract:
A low-pass filter comprising:a ground conductor;a signal conductor disposed in said ground conductor but spaced apart therefrom;a plurality of first capacitive conductors mounted on said signal conductor at predetermined intervals lengthwise thereof to form electric fields higher in intensity than that of said signal conductor between said capacitive conductors and said ground conductor, said plurality of first capacitive conductors forming low-impedance lines, respectively, and defining a high-impedance line between each pair of first said capacitive conductors so that said signal conductor is composed of an alternate arrangement of said low-impedance and high-impedance lines; andsecond capacitive conductors each carried upon said signal conductor in one of said high-impedance lines at the mid-point in its lengthwise direction to form between it and said ground conductor (an electric field of an intensity lower than that formed by each of said first capacitive conductors).