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. 21, 2025
Filed:
Jan. 07, 2022
Shenzhen Microbt Electronics Technology Co., Ltd., Guangdong, CN;
SHENZHEN MICROBT ELECTRONICS TECHNOLOGY CO., LTD., Guangdong, CN;
Abstract
The present disclosure relates to a phase-locked loop circuit and a signal processing device. The phase-locked loop circuit includes: a charge pump configured with a charge pump current; and a loop filter connected to the charge pump and configured with a first resistance value, a first capacitance value, and a second capacitance value, wherein a zero frequency of the phase-locked loop circuit is configured to be determined by the first resistance value and the first capacitance value, and a pole frequency of the phase-locked loop circuit is configured to be determined by the first resistance value and the second capacitance value; wherein at least two of the charge pump current, the first resistance value, the first capacitance value, and the second capacitance value are adjustable, to change a loop bandwidth of the phase-locked loop circuit, to maintain a first ratio between the zero frequency and the loop bandwidth unchanged, and to maintain a second ratio between the pole frequency and the loop bandwidth unchanged.