Arrangements for simulating inductance and filter networks incor

Details Arrangements for simulating inductance and filter networks incor Arrangements for simulating inductance and filter networks incor

1974-09-27

1976-02-03

Gensler, Paul L.

Wave transmission lines and networks

Attenuators

330109, H03H 1100

Patent

active

039367770

ABSTRACT:
A filter network particularly suitable for construction in micro-electronic circuitry for application in telephony systems is formed by simulating inductance in a circuit arrangement incorporating only resistance, capacitance and amplifying elements. The symmetry of the circuit arrangement and coupling into the filter network simplifies fabrication and reduces the number of amplifiers previously required to perform similar filter functions. The filter networks may be built up by coupling a chain of circuit arrangements each including two unity gain amplifiers having a series resistor/capacitor feedback network and a non-inductive element interconnecting the two amplifier feedback networks.

REFERENCES:
patent: 3375451 (1968-03-01), Borelli et al.
patent: 3473142 (1969-10-01), Herrero
patent: 3512102 (1970-05-01), Kubach
patent: 3517342 (1970-06-01), Orchard et al.
patent: 3715680 (1973-02-01), Fleischer
patent: 3767861 (1973-10-01), Dimmer

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