Invention Grant
- Patent Title: Electromagnetic interference cancellation for wireline receivers, with safety function
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Application No.: US17152758Application Date: 2021-01-19
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Publication No.: US11671142B2Publication Date: 2023-06-06
- Inventor: William Lo , Hiroshi Takatori , Kenneth Thet Zin Oo
- Applicant: Axonne Inc.
- Applicant Address: US CA Sunnyvale
- Assignee: Axonne Inc.
- Current Assignee: Axonne Inc.
- Current Assignee Address: US CA Sunnyvale
- Agency: Fenwick & West LLP
- Main IPC: H04B3/30
- IPC: H04B3/30 ; H04B1/403 ; H04B1/30

Abstract:
Embodiments of the present disclosure utilizes the natural properties of RFI noise on a wireline link. Since differential RFI noise in the system has some correlation with the common mode noise on the cable, a replica of RFI noise can be regenerated by an adaptive filter based on information about the common mode noise. The replica RFI is subtracted from the equalizer output prior to the data decision circuitry or slicer. In this method, the system does not require expensive cable, nor does the equalizer suffer additional loss due to an RFI notch filter. Since RFI can be detected and mitigated, this information can also be coupled to safety systems to increase functional safety under high EMI conditions.
Public/Granted literature
- US20220231726A1 Electromagnetic Interference Cancellation for Wireline Receivers, with Safety Function Public/Granted day:2022-07-21
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