Patent ID: 6078215
Filing Date: 2000-06-20
Classification: H03H

Abstract:
A circuit for modifying an impedance characteristic of an applied subject circuit having an intrinsic impedance coupled between a first node and a second node to provide an enhanced effective impedance between said first and second nodes, the circuit comprising:a driving impedance element having first and second ends and coupled at its first end to said first node, said driving impedance element having an impedance characteristic which is substantially proportional to the impedance characteristic of the intrinsic impedance of the subject circuit; anda voltage controlled voltage source circuit having an output coupled to said driving impedance element at said second end, said voltage controlled voltage source comprising a gain value independent of said driving impedance element, said voltage controlled voltage source circuit modifying a current in the subject circuit to provide a voltage to the combined subject circuit and driver impedance element that is proportional to a voltage across the subject circuit.