US Patent 7339426 High efficiency linear amplifier employing dynamically controlled back off

Patent 7339426 was granted and assigned to Powerwave Technologies on March, 2008 by the United States Patent and Trademark Office.

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Patent

Patent attributes

Current Assignee

Powerwave Technologies

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

73394260

Patent Inventor Names

Mark Gurvich0

Nikolai Maslennikov0

Ahmad Khanifar0

Alexander Rabinovich0

Date of Patent

March 4, 2008

Patent Application Number

110813840

Date Filed

March 16, 2005

Patent Primary Examiner

Robert Pascal

Patent abstract

A high efficiency radio frequency (RF) power amplifier having dynamically controlled back off is disclosed. The RF input voltage is sampled by an adaptive analog signal processing circuit. The adaptive analog signal processing circuit controls the supply voltage to RF amplifier devices, such as LDMOS devices, which varies the efficiency or back off of the power amplifier. The variable supply voltage in turn varies peak power of the amplifier.

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