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. 14, 2014
Filed:
Dec. 02, 2011
Baker Scott, San Jose, CA (US);
George Maxim, Milpitas, CA (US);
Chu Hsiung Ho, Milpitas, CA (US);
Stephen Franck, Felton, CA (US);
Tom Biedka, San Jose, CA (US);
Baker Scott, San Jose, CA (US);
George Maxim, Milpitas, CA (US);
Chu Hsiung Ho, Milpitas, CA (US);
Stephen Franck, Felton, CA (US);
Tom Biedka, San Jose, CA (US);
RF Micro Devices (Cayman Islands), Ltd., Greensboro, NC (US);
Abstract
Power amplifier (PA), regardless of the process used for the manufacturing of its devices, suffers from a nonlinear output capacitance that has significant impact on various aspects of the PA performance. This output capacitance is dependent on the large output voltage swing. Accordingly a compensation capacitance is added at the output of the PA that has a behavior that is inverse respective of the output voltage of that of the output capacitance of the PA. Connecting the compensation capacitor in parallel to the PA output capacitance, results in a total capacitance that is the sum of the output capacitance and its compensation capacitance. The total output capacitance is therefore essentially stable throughout the output voltage swing.