Method and apparatus for RF common-mode noise rejection in a...

Details Method and apparatus for RF common-mode noise rejection in a... Method and apparatus for RF common-mode noise rejection in a...

2004-09-30

2008-03-11

Ha, Dac V. (Department: 2611)

Pulse or digital communications

Cable systems and components

Transformer coupling

C375S349000, C375S350000, C379S416000, C333S012000

Reissue Patent

active

RE040149

ABSTRACT:
A receiver for high-speed data communications, which receives a differential signal through a pair of signal lines. The receiver includes a common-mode choke, which has first and second signal windings, which are respectively coupled in series to the pair of signal lines so as to attenuate common-mode interference in the differential signal. The choke also has a sampling winding, which is inductively coupled to the signal windings so as to generate a sampled signal responsive to current flowing in the signal windings. Signal processing circuitry is coupled to receive the sampled signal from the sampling winding and to receive the differential signal from the signal windings and to process the differential signal responsive to the sampled signal.

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