Local area network high impedance transceiver

Details Local area network high impedance transceiver Local area network high impedance transceiver

1989-12-08

1992-06-23

Chin, Stephen

Pulse or digital communications

Repeaters

Testing

375 36, H04B 138

Patent

active

051250063

ABSTRACT:
A transceiver for use in a local area network presents a high impedance to the cable when the transceiver is in its off state, that is, when it is not in the transmit mode. During the off state, the transformer that couples the transceiver to the cable is isolated from the transmitter section by reverse-biased diodes, which are forward biased when the transceiver is in the transmit or low-impedance mode.

REFERENCES:
patent: 3721958 (1973-03-01), Dixon
patent: 3875332 (1975-04-01), Fletcher et al.
patent: 3973170 (1976-08-01), Hogan
patent: 4038601 (1977-07-01), Laborie et al.
patent: 4086534 (1978-04-01), Olson
patent: 4205360 (1980-05-01), Drucker
patent: 4803699 (1989-02-01), Graham
patent: 4896349 (1990-07-01), Kubo et al.

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