Negative conductance network

Details Negative conductance network Negative conductance network

1976-02-19

1977-05-24

Cooper, William C.

Wave transmission lines and networks

Automatically controlled systems

With control of equalizer and/or delay network

333 80T, H04B 316

Patent

active

040257355

ABSTRACT:
Signal transmission circuit characteristics are supplemented by a negative conductance circuit in which current sources of complementary polarity are connected in shunt between the conductors of the signal circuit. Changes in the voltage level of one side of the signal circuit are sensed at a point common to the two sources and applied through a positive impedance to control the current output magnitude of one of the sources for effecting a supplementing of the signal circuit current as though the changed voltage level had been applied in the presence of a negative form of that impedance connected at that common point.
In additional embodiments, different, or variable, positive impedance are connected in the sensing circuit output coupling to cause the negative of such impedance to appear at such signal circuit terminal.

REFERENCES:
patent: 3384844 (1968-05-01), Meacham
patent: 3544734 (1970-12-01), Meacham
patent: 3562561 (1971-02-01), Klosterman
patent: 3578911 (1971-05-01), Bender et al.
patent: 3986152 (1976-10-01), Howell

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