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:
Aug. 03, 2021
Filed:
Dec. 29, 2018
Radiawave Technologies Co., Ltd., Guangdong, CN;
Liuan Zhang, Guangdong, CN;
Ning Zhang, Guangdong, CN;
Haigang Feng, Guangdong, CN;
Jon Sweat Duster, Beaverton, OR (US);
Yulin Tan, Guangdong, CN;
Radiawave Technologies Co., Ltd., Guangdong, CN;
Abstract
The present disclosure provides a signal calibration method, apparatus and device generated based on an imbalance of I path and Q path. The method includes sending a cosine signal and a sine signal through a signal generator, transmitting the cosine signal and the sine signal in the I path and the Q path respectively, the cosine signal and the sine signal being configured to loop back to a signal receiving direction after passing through a transmitting amplifier; processing a signal obtained by a down converter in the signal receiving direction; performing a phase adjustment and an amplitude adjustment by adjusting the signal generator, gain amplifiers of I path and Q path analog domains, and a corresponding digital domain, so as to determine an appropriate phase cancellation value and an appropriate amplitude cancellation value for an image signal; and calibrating the image signal corresponding to the signal to be calibrated.