Low-frequency noise interference prevention in power over ethernet systems

摘要

Low-frequency noise interference prevention in power over Ethernet (PoE) systems. A PoE device such as a power sourcing equipment (PSE) (10) and/or a powered device (PD) (20) is coupled to center taps of data transformers (T1-4) on multiple wire pairs used for high-data rate transmission via series high-impedance inductive devices (L1-4).