Method and apparatus for reducing electromagnetic interference a

Details Method and apparatus for reducing electromagnetic interference a Method and apparatus for reducing electromagnetic interference a

1991-08-23

1993-06-29

Mottola, Steven

Wave transmission lines and networks

Transmission line inductive or radiation interference...

333180, 174 35R, H04B 328

Patent

active

052238067

ABSTRACT:
A computer network interface ("NIC") exhibits reduced electromagnetic interference and emission through capacitively coupling an output transformer center tap both to reference ground and to logic ground of the NIC's transceiver. Transmit signal lines on both sides of the transceiver are also capacitively coupled to both grounds. Other aspects of the invention reduce electromagnetic interference and emission through improvements in the construction of the NIC printed circuit board and the technique for intercoupling a plurality of NIC's using shielded twisted-pair cable.

REFERENCES:
patent: 5113159 (1992-05-01), Adriaenssens et al.

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