Network for simulating low-noise temperature resistors

Details Network for simulating low-noise temperature resistors Network for simulating low-noise temperature resistors

1977-10-03

1979-05-29

Gensler, Paul L.

Wave transmission lines and networks

Negative resistance or reactance networks of the active type

307230, H03H 500

Patent

active

041568591

ABSTRACT:
A class of two-terminal active networks which simulate low-noise temperature resistors is disclosed. A single differential-input operational amplifier connected with a feedback resistor in an inverting amplifier configuration comprises the active element of the network. A dual-transformer feedback arrangement or a single transformer feedback arrangement comprises the remainder of the circuit. Either positive or negative simulated resistors can be obtained with a wide range of equivalent resistance values and effective noise temperatures.

REFERENCES:
patent: 3413576 (1968-11-01), Sheahan
patent: 3697900 (1972-10-01), Irons
patent: 3818338 (1974-06-01), Chambers, Jr. et al.
patent: 3828281 (1974-08-01), Chambers, Jr.
patent: 3927280 (1975-12-01), Gupta et al.
patent: 3993937 (1976-11-01), Fuhrmann

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