Electronic hybrid circuit

Details Electronic hybrid circuit Electronic hybrid circuit

1985-09-19

1989-10-31

Ng, Jin F.

Telephonic communications

Subscriber line or transmission line interface

Hybrid circuit

379378, H03B 158

Patent

active

048782440

ABSTRACT:
An electronic hybrid circuit includes a differential amplifier having its non-inverting input coupled via a resistor to a four-wire input port and via a coupling transformer to a two-wire input/output port, its output coupled to a four-wire output port, and its inverting input coupled via a resistor to the input port and also coupled to an impedance network. The impedance network includes an inductive impedance which is coupled either to the amplifier output or to circuit ground, and which may be constituted by a gyrator or other electronic circuit which simulates an inductor.

REFERENCES:
patent: 3573647 (1971-04-01), Antoniou
patent: 3970805 (1976-07-01), Thomas
patent: 4284859 (1981-08-01), Araseki
patent: 4346266 (1982-08-01), Brockman et al.
patent: 4380690 (1983-04-01), Matsufuji et al.
patent: 4500755 (1985-02-01), Murto
patent: 4532384 (1985-07-01), Keriakos et al.
"Novel Active Hybrid Circuit and its Applications", S. B. Park, Electronics Letters, vol. 11, No. 16, pp. 362-363, Aug. 7, 1975.

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