Balanced hybrid circuit

Details Balanced hybrid circuit Balanced hybrid circuit

1995-06-06

1998-10-13

Hunter, Daniel S.

Telephonic communications

Subscriber line or transmission line interface

Hybrid circuit

379399, 379405, 330 69, H04M 176

Patent

active

058224262

ABSTRACT:
Large signal swings are obtained for the transmitted signal of a telephone line modem using differential drivers. Compensation for the complex nature of line impedance is provided without affecting the response of the receive circuits. Common-mode noise is effectively cancelled due to a fully balanced topology for the transmit and receive portions of the hybrid circuit.

REFERENCES:
patent: 4163878 (1979-08-01), Hashemi
patent: 4174470 (1979-11-01), Seidel
patent: 4670870 (1987-06-01), Hewinson et al.
patent: 4856058 (1989-08-01), Sato et al.
patent: 4989243 (1991-01-01), Choi
patent: 5127046 (1992-06-01), Malm
patent: 5253249 (1993-10-01), Fitzgerald
patent: 5402485 (1995-03-01), Takato et al.
patent: 5479504 (1995-12-01), Nakano et al.
patent: 5524047 (1996-06-01), Brown et al.
IBM Technical Disclosure Bulletin, "Telecommunications Transmitter/Receiver with Sidetone Suppression," vol. 25, No. 4, Sep. 1982.

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