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.:

US 8067988 B1

PDF
Full Text
Expired
Date of Patent:
Nov. 29, 2011

Filed:

Feb. 18, 2010
Applicants:

Chun-liang Chen, Yongkang, TW;

Hui-chun Hsu, Bade, TW;

Inventors:

Chun-Liang Chen, Yongkang, TW;

Hui-Chun Hsu, Bade, TW;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03L 7/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

A low jitter and wide-range frequency synthesizer for low voltage operation includes a detector to generate a detection signal based on a logic level difference between an input signal and a feedback signal, a charge pump to generate a control signal based on the detection signal, a filter to generate a tuning signal based on the control signal, a bias circuit to generate a first bias signal and a second bias signal based on the tuning signal, a controllable oscillator to generate a differential output signal based on the first and the second bias signals, a differential to single ended converter to convert the differential output signal into an output signal, and a programmable frequency divider to generate the feedback signal based on the output signal.


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Chen, Chun-Liang. (2011). Low jitter and wide-range frequency synthesizer for low voltage operation (U.S. Patent No. 8067988). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8067988

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