Separating filter/splitter for different digital subscriber line (DSL) transmission techniques has a low-pass filter for low-frequency signals for analog communications systems and ISDN components

摘要

A filter circuit has first (1), second (2) and third (3) inductive components (IC) wired in series, each with four inductive resistors (IR) connected in series with different values in relation to each other. A capacitor (4) links between second and third IR that form shunt IR. The third IC is created from just two series IR. The number of IR for the two first components can be varied.