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Phase control loop design for RF power amplifier

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akrcal

akrcal

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Hi all,

I want to make phase controller for a power amplifier( output of 10W). Its output phase should be constant with respect to the input signal phase regardless of the phase change of the amplifier due to power supply fluctuation, temperature change and aging or due to any other reason. I will have to design a phase control loop. Can anyone suggest how to do that? Any relevant paper or document?

Regards,
Akr
 

There are probably several ways. Maybe a PLL where you sample and compare the input and output signal and use the error signal to drive a phase shifter. You didn't mention if this was CW or a modulated signal.
 

    akrcal

    akrcal

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The RF power amplifier is CW one. Can you suggest some schematic for that? I think I will have to analyze the feedback control loop for the phase control. In that case how to analyse the loop and its dynamics? Kindly help
 

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