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:
Apr. 14, 2020
Filed:
Mar. 04, 2019
Thine Electronics, Inc., Tokyo, JP;
Shunichi Kubo, Tokyo, JP;
Mitsutoshi Sugawara, Tokyo, JP;
Satoshi Miura, Sujinami-ku, JP;
Akihiro Moto, Tokyo, JP;
THINE ELECTRONICS, INC., Tokyo, JP;
Abstract
A PLL circuit includes a phase comparator, a charge pump, a loop filter, a voltage controlled oscillator, a frequency divider, and a phase compensator. The loop filterincludes a resistor, a first capacitance element, and a second capacitance element. The phase compensatoris provided in parallel to the charge pumpand adds a differentiation term to an open-loop transfer function. The phase compensatorincludes a bufferreceiving a phase difference signal output from the phase comparator and a third capacitance elementprovided between an output terminal of the bufferand an input terminal of the loop filter