Is a
Patent attributes
Patent Applicant
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Philip John Lehtola0
Date of Patent
October 31, 2017
Patent Application Number
15043459
Date Filed
February 12, 2016
Patent Citations Received
Patent Primary Examiner
Patent abstract
A power amplification system includes a Doherty power amplifier (PA) configured to receive a voltage supply signal and a radio-frequency (RF) signal and generate an amplified RF signal using the voltage supply signal, the Doherty PA including a carrier amplifier and a peaking amplifier. A carrier amplifier bias circuit and a peaking amplifier bias circuit coupled to one or more of the carrier amplifier and the carrier amplifier bias circuit over a coupling path are provided wherein the peaking amplifier bias circuit is configured to provide a peaking bias signal to the peaking amplifier based on a saturation level of the carrier amplifier.
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