Data access arrangement having improved transmit-receive separat

Details Data access arrangement having improved transmit-receive separat Data access arrangement having improved transmit-receive separat

1996-09-03

1998-04-21

Chin, Wellington

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359162, 379398, 379402, H04B 1000

Patent

active

057424179

ABSTRACT:
A data access arrangement (DAA) having a transhybrid circuit for separating a transmit signal from a received signal by providing a transmit cancellation signal to the inverting input of a servo-feedback differential amplifier on the receive channel of the DAA. The cancellation signal is provided by a photodiode optically coupleable with a light emitting diode within a optical isolator on the transmission channel of the DAA. The gain of the cancellation signal can be independently controlled.

REFERENCES:
patent: 4417099 (1983-11-01), Pierce
patent: 4638167 (1987-01-01), Leseure et al.
patent: 5245654 (1993-09-01), Wilkinson et al.
patent: 5465298 (1995-11-01), Wilkison et al.
patent: 5506900 (1996-04-01), Fritz
patent: 5579144 (1996-11-01), Whitney

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