Patent Number: 6,396,340

Title: RF power amplifier system employing AC-DC power supplies and RF combining

Abstract: An RF power amplifier system is presented herein and it includes an RFsource that provides an RF carrier signal having a given RF carrierfrequency. An RF amplifier module amplifies the carrier signal and thismodule includes first and second RF amplifiers having a common input toreceive a turn on signal that turns on both amplifiers and wherein theoutputs of the amplifiers are coupled together in parallel. A controllersupplies a turn on signal to the common input to turn on the first andsecond amplifiers. A first AC to DC supply provides a first DC operatingvoltage obtained from a first multiphase AC supply and applies this to theamplifier module and wherein the first DC voltage exhibits a ripplefrequency dependent upon the number of phases in the first multiphasesupply. Also, a second AC to DC supply is provided for supplying a secondDC operating voltage from a second multiphase AC supply to the RFamplifier module and wherein the second DC operating voltage exhibits aripple frequency dependent upon the number of phases in the secondmultiphase supply.

Inventors: Schmitt; Philip Charles (Lebanon, OH), Luu; Ky Thoai (Mason, OH)


International Classification: H03F 3/217 (20060101); H03F 3/20 (20060101); H03F 003/38 ()

Expiration Date: 05/28/2014