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. 25, 2009
Filed:
Jan. 02, 2008
Applicants:
Wolf Zhang, Shanghai, CN;
Hideto Takagishi, San Jose, CA (US);
Alan Wu, Shanghai, CN;
Inventors:
Assignee:
PacificTech Microelectronics, Inc., Grand Cayman, KY;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H03F 3/217 (2006.01);
U.S. Cl.
CPC ...
Abstract
Embodiments of the present invention include switching amplifier circuits and methods. In one embodiment, the present invention includes an low distortion method of driving a switching amplifier comprising generating a first pulse width modulated signal on a first terminal, generating a second pulse width modulated signal on a second terminal, and delaying one of the first or second signals. In one embodiment, the modulated signals and delay result in pulse trains near zero crossings to reduce crossover distortion.