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:
Jan. 31, 2012
Filed:
Nov. 20, 2009
Dong Ho Lee, Cedar Rapids, IA (US);
Kyu Hwan an, Dunwoody, GA (US);
Chang-ho Lee, Marietta, GA (US);
Joy Laskar, Marietta, GA (US);
Dong Ho Lee, Cedar Rapids, IA (US);
Kyu Hwan An, Dunwoody, GA (US);
Chang-Ho Lee, Marietta, GA (US);
Joy Laskar, Marietta, GA (US);
Georgia Tech Research Corporation, Atlanta, GA (US);
Samsung Electro-Mechanics, Gyunngi-Do, KR;
Abstract
Systems and methods for providing a self-mixing adaptive bias circuit that may include a mixer, low-pass filter or a phase shifter, and a bias feeding block. The self-mixing adaptive bias circuit may generate an adaptive bias signal depending on input signal power level. As the input power level goes up, the adaptive bias circuit increases the bias voltage or bias current such that the amplifier will save current consumption at low power operation levels and obtain better linearity at high power operation levels compared to conventional biasing techniques. Moreover, the adaptive bias output signal can be used to cancel the third-order intermodulation terms (IM3) to further enhance the linearity as a secondary effect.