Simultaneous bi-directional transceiver

Details Simultaneous bi-directional transceiver Simultaneous bi-directional transceiver

2006-07-18

2006-07-18

Chang, Daniel D. (Department: 2819)

Electronic digital logic circuitry

Interface

Current driving

C326S086000, C327S108000

Reexamination Certificate

active

07078935

ABSTRACT:
A simultaneous bi-directional (SBD) transceiver includes a first, second, third and fourth differential amplifiers, where the third differential amplifier responds to signals input through data transmission channels, and the fourth differential amplifier responds to output signals derived from the first differential amplifier. The first and second differential amplifiers are fully differential amplifiers. A size of a constant current source associated with the second differential amplifier is n (n>1) times that of a constant current source associated with the first differential amplifier. A size of a constant current source associated with the third differential amplifier is m (m>1) times that of a constant current source associated with the fourth differential amplifier.

REFERENCES:
patent: 5825819 (1998-10-01), Cogburn
patent: 6163290 (2000-12-01), Moreland et al.

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