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US Patent 7663435 Doherty amplifying apparatus using a harmonic control circuit

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Patent
Patent

Patent attributes

Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
Patent Number
7663435
Date of Patent
February 16, 2010
Patent Application Number
12068684
Date Filed
February 11, 2008
Patent Citations Received
‌
US Patent 12088255 Doherty amplifiers and amplifier modules with shunt inductor and capacitor circuit for improved carrier harmonic loading
3
Patent Primary Examiner
‌
Steven J Mottola
Patent abstract

A Doherty power amplifying apparatus includes a harmonic-controlled Doherty amplifier; and an input matching unit and an output matching unit for input matching and output matching the harmonic-controlled Doherty amplifier, respectively. The harmonic-controlled Doherty amplifier includes a carrier amplifier; a peaking amplifier arranged in parallel to the carrier amplifier; and a harmonic control circuit, arranged in front of the output matching unit, for controlling a harmonic component of an output of the Doherty amplifier to enable the Doherty amplifier to perform a switching or saturation operation.

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