Is a
Patent attributes
Current Assignee
0
Patent Jurisdiction
Patent Number
Patent Inventor Names
Ali Afsahi0
Debopriyo Chowdhury0
Date of Patent
March 4, 2014
0Patent Application Number
135346690
Date Filed
June 27, 2012
0Patent Citations Received
Patent Primary Examiner
Patent abstract
A power amplifier includes generation, tracking and usage of an envelope of an input RF signal. To improve upon the efficiency of the power amplifier, various configurations include using the tracked envelope, for example, an OFDM signal, to improve the average efficiency. Suitable hardware/software in the form of circuitry, logic gates, and/or code functions to generate and track an envelope of an input RF signal and modulate one or more of the input supply voltage, cascode gate bias or parallel PA branches using the tracked envelope.
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