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:
Apr. 25, 2017
Filed:
Mar. 08, 2016
Freescale Semiconductor, Inc., Austin, TX (US);
Abdulrhman M. S. Ahmed, Gilbert, AZ (US);
Ramanujam Srinidhi Embar, Gilbert, AZ (US);
Yu-Ting D. Wu, Gilbert, AZ (US);
NXP USA, Inc., Austin, TX (US);
Abstract
A Doherty amplifier device operable over multiple frequency bands includes a controller that, in some embodiments, is configured to output a carrier bias signal to a first amplifier and a peaking bias signal to a second amplifier as part of a first operating configuration associated with a first frequency band, and output the peaking bias signal to the second amplifier and the carrier bias signal to a third amplifier as part of a second operating configuration associated with a second frequency band. In some embodiments, the controller is configured to select an impedance inverter configuration associated with a respective frequency band. At least one impedance inverter configuration includes a compound impedance inverter including two or more impedance inverters coupled in series with at least one node between the two or more impedance inverters coupled to an output of a third amplifier.