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:
Aug. 26, 2014

Filed:

May. 10, 2011
Applicant:

Yi Cheng Chang, Tempe, AZ (US);

Inventor:

Yi Cheng Chang, Tempe, AZ (US);

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03K 3/03 (2006.01); H03B 5/02 (2006.01); H03L 7/00 (2006.01);
U.S. Cl.
CPC ...
H03B 5/02 (2013.01); H03L 7/00 (2013.01); H03K 3/0322 (2013.01);
Abstract

A voltage controlled oscillator includes a plurality of serially connected composite gain stages. A composite gain stage includes a transconductance stage and a transimpedance stage. The transconductance stage has first and second current paths from a first power supply voltage terminal to a second power supply voltage terminal. A first variable resistance is coupled between the first and second current paths. The transimpedance stage has a first inverter and a second inverter. The first inverter has an input terminal coupled to the output of the first current path and an output terminal. The second inverter has an input terminal coupled to the output of the second current path, and an output terminal. A second variable resistance is coupled between the input terminal and the output terminal of the first inverter, and a third variable resistance is coupled between the input terminal and the output terminal of the second inverter.


Find Patent Forward Citations

Quick Actions:

Chang, Yi. (2014). Phase locked loop circuit having a voltage controlled oscillator with improved bandwidth (U.S. Patent No. 8816782). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8816782

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