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. 15, 2012
Filed:
May. 21, 2010
Yanyu Huang, Atlanta, GA (US);
Wangmyong Woo, Cumming, GA (US);
Chang-ho Lee, Marietta, GA (US);
Joy Laskar, Marietta, GA (US);
Yanyu Huang, Atlanta, GA (US);
Wangmyong Woo, Cumming, GA (US);
Chang-Ho Lee, Marietta, GA (US);
Joy Laskar, Marietta, GA (US);
Samsung Electro-Mechanics, Gyunngi-Do, KR;
Abstract
Systems and methods for provided for linearization systems and methods for variable attenuators. The variable attenuators can include series transistors along a main signal path from the input to output, as well as shunt transistors. A bootstrapping body bias circuit can be used with one or of the series transistors to allow the body of a connected transistor to swing responsive to a received RF input signal. As the RF signal increases and affects the gate-to-source voltage difference of a transistor, a bootstrapping body bias circuit can adaptively adjust the threshold voltage of the connected transistor and compensate the channel resistance variation resulting from gate-to-source voltage swing. The bootstrapping body bias circuit can be implemented using passive elements, active elements, or a combination thereof.