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:
Oct. 03, 2023
Filed:
Nov. 30, 2021
Texas Instruments Incorporated, Dallas, TX (US);
Karthikeyan Gunasekaran, Chennai, IN;
Snehasish Roychowdhury, Dakshin Barasat, IN;
Rakesh Manjunath, Bengaluru, IN;
Aswath V S, Kannur, IN;
Sthanunathan Ramakrishnan, Bengaluru, IN;
Sarma Sudareswara Gunturi, Bengaluru, IN;
Rahul Sharma, Bengaluru, IN;
Jagannathan Venkataraman, Bengaluru, IN;
Nagarajan Viswanathan, Bengaluru, IN;
TEXAS INSTRUMENTS INCORPORATED, Dallas, TX (US);
Abstract
A spur correction system for a transmit chain having an interleaving multiplexer. In some embodiments, the spur correction system includes a spur sense chain, a correction controller, and a Q path corrector. The interleaving multiplexer combines signals from multiple bands in response to a clock signal. The spur sense chain estimates an error that is in phase with the clock signal (an I-phase error) and an error that is a derivative of the clock signal (a Q-phase error). The correction controller compensates for the estimated I-phase error by injecting an I-phase correction signal into the transmit chain. The Q path corrector compensates for the estimated Q-phase error by selectively connecting one or more capacitors within the interleaving multiplexer.