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:
Aug. 20, 2013
Filed:
Aug. 17, 2011
Hanyi Ding, Colchester, VT (US);
Pinping Sun, Essex Junction, VT (US);
Hailing Wang, Essex Junction, VT (US);
Hanyi Ding, Colchester, VT (US);
Pinping Sun, Essex Junction, VT (US);
Hailing Wang, Essex Junction, VT (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A voltage controlled oscillator (VCO), IC and CMOS IC including the VCO. The VCO includes an LC tank circuit, a pair of cross-coupled devices connected to the tank circuit and driving a pair of buffers. Each of the pair of cross-coupled devices includes a field effect transistor (FET) with an independently controllable body, e.g., the surface layer of a Silicon on Insulator (SOI) chip or the surface well of a multi-well chip. Diodes in the multi-well structure are biased off in each device. The tank circuit is coupled to the buffers solely through the FET drain to body capacitance.