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:
May. 07, 2013
Filed:
Dec. 02, 2010
Applicant:
Young Jae Lee, Daegu, KR;
Inventor:
Young Jae Lee, Daegu, KR;
Assignee:
Electronics and Telecommunications Research Institute, Daejeon, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03B 5/12 (2006.01); H03B 27/00 (2006.01); H03C 3/20 (2006.01);
U.S. Cl.
CPC ...
Abstract
A voltage controlled oscillator includes a resonant circuit including one or more transformers and a plurality of variable capacitor circuits connected in parallel to the one or more transformers and generating a plurality of oscillation signals having multiple phases, and a negative resistance circuit including a plurality of transistors cross-coupled via the one or more transformers and generating negative resistance for maintaining the oscillation of the resonant circuit.