Two-terminal-pair network simulating an inductance

Details Two-terminal-pair network simulating an inductance Two-terminal-pair network simulating an inductance

1981-06-08

1983-07-26

Gensler, Paul L.

Wave transmission lines and networks

Negative resistance or reactance networks of the active type

Simulating specific type of reactance

307494, H03H 1148

Patent

active

043956904

ABSTRACT:
A two-terminal-pair circuit which simulates an inductance includes input and output terminal pairs and a first ohmic resistor. The voltage-carrying terminal of the input terminal pair is connected to one terminal of the first ohmic resistor. The circuit includes a bridge circuit having bridge branches and two opposite bridge diagonal terminals, two capacitors each connecting a respective one of the two bridge diagonal terminals to a respective one of the terminals of the first ohmic resistor, and a difference amplifier having two inputs each connected to a respective one of the two bridge diagonal terminals. The output of the difference amplifier is connected to the base of a transistor whose collector-emitter path is connected in one of the bridge branches in series with an effective resistor or with a parallel circuit comprising a capacitive reactance and an effective resistor. The emitter of the transistor is connected to the other terminal of the first resistor, and the collector of the transistor forms the voltage-carrying terminal of the output terminal pair.

REFERENCES:
patent: 2968773 (1961-01-01), Sandberg
patent: 3418561 (1968-12-01), Feldman
Sudo et al., A Constituting Method of Floating Inductance and Its Application in All-Pass-Network, Trans. of IECE of Japan, vol. 60, No. 8, Aug. 1977, pp. 403, 404.

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