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 8390343 B1

PDF
Full Text
Expired
Date of Patent:
Mar. 05, 2013

Filed:

Dec. 28, 2010
Applicants:

Hong-yeh Chang, Taipei County, TW;

Yen-liang Yeh, Taoyuan County, TW;

Chia-hung Chang, Chiayi County, TW;

Chun-jen Chen, Hsinchu County, TW;

Inventors:

Hong-Yeh Chang, Taipei County, TW;

Yen-Liang Yeh, Taoyuan County, TW;

Chia-Hung Chang, Chiayi County, TW;

Chun-Jen Chen, Hsinchu County, TW;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03B 19/06 (2006.01);
U.S. Cl.
CPC ...
Abstract

An injection-locked frequency divider is provided and which includes an injection transistor, an oscillator, a current source and a transformer. The injection transistor is used to receive an injection signal. The oscillator is used to divide the injection signal to generate a divided frequency signal. The current source is coupled to the oscillator to provide a current to the oscillator. The transformer is coupled between the injection transistor and the oscillator to increase the equivalent transconductance of the injection transistor, and thus increasing the locking range of the injection-locked frequency divider.


Find Patent Forward Citations

Chang, Hong-Yeh. (2013). Injection-locked frequency divider (U.S. Patent No. 8390343). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8390343

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