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. 08, 2025
Filed:
May. 16, 2023
Applicant:
Shanghai Vanchip Technologies Co., Ltd., Shanghai, CN;
Inventors:
Assignee:
SHANGHAI VANCHIP TECHNOLOGIES CO., LTD., Shanghai, CN;
Primary Examiner:
Int. Cl.
CPC ...
H03K 3/03 (2006.01); H03L 7/099 (2006.01);
U.S. Cl.
CPC ...
H03K 3/0315 (2013.01); H03L 7/0995 (2013.01);
Abstract
Disclosed in the present invention are a low-temperature coefficient ring oscillator, a chip, and a communication terminal. The low-temperature coefficient ring oscillator comprises a temperature tracking compensation circuit, an inverter oscillation circuit, and a buffer shaping circuit. The temperature characteristics of the impedance of a PMOS tube and an NMOS tube in an inverter in the inverter oscillation circuit are tracked and compensated for by means of the impedance, along with temperature change, of a PMOS tube and a NMOS tube connected by a diode.