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:
Dec. 08, 2015
Filed:
Dec. 03, 2013
Ramanujam Srinidhi Embar, Chandler, AZ (US);
Joseph Staudinger, Gilbert, AZ (US);
Geoffrey G. Tucker, Tempe, AZ (US);
Ramanujam Srinidhi Embar, Chandler, AZ (US);
Joseph Staudinger, Gilbert, AZ (US);
Geoffrey G. Tucker, Tempe, AZ (US);
Freescale Semiconductor, Inc., Austin, TX (US);
Abstract
A device includes a Doherty amplifier having a carrier path and a peaking path. The Doherty amplifier includes a carrier amplifier configured to amplify a signal received from the carrier path and a peaking amplifier configured to amplify a signal received from the peaking path. The device includes a variable impedance coupled to an output of the Doherty amplifier, and a controller configured to set the variable impedance to a first impedance when an output power level of the Doherty amplifier is less than a threshold and to a second impedance when the output power level of the Doherty amplifier is above the threshold.