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US 8,442,099 B1Granted
Crosstalk cancellation for a common-mode channel
AssigneeAquantia Corporation
InventorHossein Sederat
Life of this patent
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Abstract
A transceiver circuit is disclosed. The transceiver circuit comprises a receive path to receive a differential signal and a first crosstalk filter coupled to the receive path. A common-mode path is provided for carrying a common-mode signal. An RFI interference filter is coupled between the common-mode path and the receive path. Isolation circuitry decouples the RFI interference filter from the first crosstalk filter.
Claims19
A transceiver circuit comprising:
- a receive path to receive a differential signal;
- a first crosstalk filter coupled to the receive path;
- a common-mode path for carrying a common-mode signal;
- a radio frequency interference filter coupled between the common-mode path and the receive path;
- and
- isolation circuitry that comprises an adaptive filter to decouple the radio frequency interference filter from the first crosstalk filter.
3 more elements
A transceiver circuit comprising:
- a plurality of receive paths for coupling to a plurality of physical channels, the plurality of receive paths comprising differential signal paths to receive respective differential signals;
- crosstalk cancellation circuitry coupled to the differential signal paths to generate compensation signals to offset crosstalk in each of the differential signal paths;
- at least one common-mode signal path for propagating a common-mode signal;
- RFI cancellation circuitry disposed between the at least one common-mode channel and each of the plurality of differential signal paths;
- and
- first leakage cancellation circuitry disposed between each of the differential signal paths and the at least one common-mode signal path.
3 more elements
A method of signaling comprising:
- receiving a differential signal;
- cancelling crosstalk from the differential signal on a receive path;
- cancelling RFI from the differential signal on a common mode path;
- and
- decoupling the cancelling crosstalk from the cancelling RFI between the receive path and common mode path by leakage adaptive filters.
2 more elements
Dependencies are inferred from the claim text.