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US Patent 7589589 Power amplifying apparatus and mobile communication terminal

Patent 7589589 was granted and assigned to Sony on September, 2009 by the United States Patent and Trademark Office.

Overview Structured Data Issues Contributors Activity

Is a

Patent

Patent attributes

Current Assignee

Sony

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

7589589

Date of Patent

September 15, 2009

Patent Application Number

11840691

Date Filed

August 17, 2007

Patent Primary Examiner

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Steven J Mottola

Patent abstract

A power amplifying apparatus includes an input terminal configured to receive an input signal, a first power amplifier biased for class A or class AB operation which is configured to amplify the input signal, an output terminal connected to an output of the first power amplifier, a second power amplifier biased for class C operation which is configured to receive and amplify a part of the input signal, and a switch connected between an output of the second power amplifier and the output terminal.