Invention Grant
- Patent Title: Analog self-interference cancellation systems for CMTS
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Application No.: US16230077Application Date: 2018-12-21
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Publication No.: US10382085B2Publication Date: 2019-08-13
- Inventor: Jung-Il Choi , Wilhelm Steffen Hahn , Mayank Jain
- Applicant: Kumu Networks, Inc.
- Applicant Address: US CA Sunnyvale
- Assignee: Kumu Networks, Inc.
- Current Assignee: Kumu Networks, Inc.
- Current Assignee Address: US CA Sunnyvale
- Agent Jeffrey Schox; Thomas Gwinn
- Main IPC: H04B1/44
- IPC: H04B1/44 ; H04B1/525 ; H04L5/14 ; H01Q25/00 ; H04L27/38 ; H01Q21/24 ; H01Q1/24

Abstract:
A system for wired analog self-interference cancellation includes a coarse delayer that delays a sampled RF transmit signal by a first delay amount; a frequency downconverter that downconverts the sampled RF transmit signal to IF; a first canceller tap group comprising a first per-tap-group delayer, a first sampling coupler, a first per-tap delayer, and first and second analog vector modulators that generates an IF self-interference cancellation signal; a frequency upconverter that upconverts the IF self-interference cancellation signal to RF; and a receive coupler that combines the RF self-interference cancellation signal with the RF receive signal, reducing self-interference.
Public/Granted literature
- US20190149186A1 ANALOG SELF-INTERFERENCE CANCELLATION SYSTEMS FOR CMTS Public/Granted day:2019-05-16
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