Electronic circuit to reduce noise in digital subscriber loop and communications over unshielded twisted pair metallic conductors

摘要: In order to reduce noise in telecommunications made over unshielded twisted pair (UTP) of metallic conductors an active electronic circuit for a two-to-four wire hybrid reduces common mode signals without recourse inductive components. The has balance network that dynamically alters its impedance closely with the two line impedance. Residual are cancelled. Resistors connected wires and generates high differential virtual ground signals.