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.

Date of Patent:
Oct. 05, 2021

Filed:

Dec. 17, 2020
Applicant:

Mediatek Inc., Hsin-Chu, TW;

Inventors:

Po-Chun Huang, Hsinchu, TW;

Yu-Li Hsueh, Hsinchu, TW;

Chao-Ching Hung, Hsinchu, TW;

Assignee:

MEDIATEK INC., Hsin-Chu, TW;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03L 7/10 (2006.01); H03L 7/093 (2006.01);
U.S. Cl.
CPC ...
H03L 7/10 (2013.01); H03L 7/093 (2013.01);
Abstract

A fast-locking phase-locked loop (PLL) and an associated fast-locking method thereof are provided. The fast-locking PLL may include a gear-shifting loop filter, which is configured to have a dynamic bandwidth. The gear-shifting loop filter may include a resistor set and a capacitor set coupled to the resistor set, where the resistor set is configured to have a dynamic resistance, and the capacitor set is configured to have a dynamic capacitance. More particularly, the dynamic resistance is switched from a first resistance to a second resistance and the dynamic capacitance is switched from a first capacitance to a second capacitance, to make the dynamic bandwidth be switched from a first bandwidth to a second bandwidth.


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