The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 24, 2019
Filed:
Feb. 27, 2019
Kumu Networks, Inc., Sunnyvale, CA (US);
Wilhelm Steffen Hahn, Sunnyvale, CA (US);
Alfred Riddle, Sunnyvale, CA (US);
Ernie Landi, Sunnyvale, CA (US);
Dai Sieh, Sunnyvale, CA (US);
Jung-Il Choi, Sunnyvale, CA (US);
Mayank Jain, Sunnyvale, CA (US);
Kumu Networks, Inc., Sunnyvale, CA (US);
Abstract
A system for self-interference cancellation includes a frequency downconverter that decomposes a sampled RF transmit signal into an in-phase transmit signal and a quadrature transmit signal; a first analog vector modulator that scales the transmit signals to generate first scaled transmit signals; a second analog vector modulator that scales delayed transmit signals to generate second scaled transmit signals; a frequency upconverter that recomposes the scaled transmit signals into an RF self-interference cancellation signal; and a receive coupler that that combines the RF self-interference cancellation signal with a RF receive signal to reduce self-interference.