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:
Feb. 11, 2020
Filed:
Nov. 29, 2017
Quantenna Communications, Inc., San Jose, CA (US);
Songping Wu, Cupertino, CA (US);
Hossein Dehghan, Diablo, CA (US);
Abhishek Kumar Agrawal, Fremont, CA (US);
QUANTENNA COMMUNICATIONS, INC., San Jose, CA (US);
Abstract
A MIMO wireless transceiver includes: antennas, components forming transmit and receive chains coupled to the antennas, a signal combiner, and a predistortion calibration circuit. The transmit chain components include: pre-distorter circuits and power amplifiers (PA)s, The pre-distorter circuits each couple to a transmit chain for pre-distorting an associated signal thereon. The PAs are input coupled to a corresponding transmit chain and output coupled to a corresponding antenna. The signal combiner combines the amplified signals from all of the PAs into a combined output signal. The predistortion calibration circuit includes: a chain isolator circuit to isolate a selected amplified signal of a PA within the combined output signal from the signal combiner and an inverter circuit to determine from the selected amplified signal a mathematical inverse of the associated PA's non-linearity; and to provide corresponding pre-distortion parameters to the corresponding pre-distorter circuit,