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:
Mar. 22, 2016
Filed:
Mar. 06, 2015
Skyworks Solutions, Inc., Woburn, MA (US);
Florinel G. Balteanu, Irvine, CA (US);
David Steven Ripley, Marion, IA (US);
Sabah Khesbak, Irvine, CA (US);
Jeffrey Gordon Strahler, Greensboro, NC (US);
Roman Zbigniew Arkiszewski, Oak Ridge, NC (US);
Yevgeniy A. Tkachenko, Belmont, MA (US);
SKYWORKS SOLUTIONS, INC., Woburn, MA (US);
Abstract
Apparatus and methods for envelope trackers are disclosed herein. In certain configurations, a mobile device includes a power amplifier configured to amplify a radio frequency (RF) input signal to generate an RF output signal. The power amplifier is configured to receive power from a power amplifier supply voltage. The mobile device further includes a voltage converter configured to convert a battery voltage into a regulated voltage, and the voltage converter is configured to control a magnitude of the regulated voltage based on an error signal. The mobile device further includes an error amplifier configured to generate an output current based on an envelope of the RF input signal and to generate the power amplifier supply voltage by adjusting the magnitude of the regulated voltage using the output current. The error amplifier is further configured to control the error signal.