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:
Oct. 28, 2014
Filed:
Dec. 02, 2011
Dmitriy Rozenblit, Irvine, CA (US);
Masoud Kahrizi, Irvine, CA (US);
Jaleh Komaili, Irvine, CA (US);
Rajasekhar Pullela, Irvine, CA (US);
Shahrzad Tadjpour, Irvine, CA (US);
Dmitriy Rozenblit, Irvine, CA (US);
Masoud Kahrizi, Irvine, CA (US);
Jaleh Komaili, Irvine, CA (US);
Rajasekhar Pullela, Irvine, CA (US);
Shahrzad Tadjpour, Irvine, CA (US);
Skyworks Solutions, Inc., Woburn, MA (US);
Abstract
A transmitter adjusts a transmitted power level by modifying a control input of a variable gain amplifier. A power amplifier control system includes an envelope extractor, an error extractor, and a feed-forward multiplier. The envelope extractor receives data signal inputs and computes the envelope of the combined signal. The error extractor generates an error signal as a function of the combined signal and the output power generated by the power amplifier. The feed-forward multiplier generates a modified error signal that is responsive to a function of the gain in a feedback path. A corresponding method for controlling a power level is also disclosed. In some embodiments, a transmit chain with a power control loop is used to adjust the transmit signal power applied at an input of a variable gain amplifier. A corresponding method for adjusting the transmit signal power level is also included.