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:
May. 12, 2026
Filed:
Feb. 02, 2023
Beijing Eswin Computing Technology Co., Ltd., Beijing, CN;
Guangzhou Transa Semi Information Technology Co., Ltd., Guangzhou, CN;
Zhiyong Chen, Beijing, CN;
Yangyang Li, Beijing, CN;
Beijing ESWIN Computing Technology Co., Ltd., Beijing, CN;
Guangzhou Transa Semi Information Technology Co., Ltd., Guangzhou, CN;
Abstract
Disclosed is a calibration circuit, a calibration method for a filter and a filter device. The calibration circuit includes: a signal receiving terminal, receiving an output signal from the filter; a frequency detection module, obtaining a count value according to the output signal, the count value representing a frequency of the output signal; an adjustment module, adjusting the control signal according to the count value and a target value representing a target frequency, to adjust the frequency of the output signal provided by the filter until a calibration value, which allows the count value to be consistent with the target value, of the control signal is determined. The filter performs filtering according to the control signal with the calibration value in an operating stage. The calibration circuit performs feedback adjustment on the filter to achieve bandwidth calibration with high calibration accuracy and simple circuit structure.