Optimizing GaN and GaAs RF Amplifier Performance Using Novel Biasing Techniques

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Does it make sense to design a closed loop circuit for bias control of a 28V or 50V GaN amplifier?

sanazaim

on Feb 8, 2023

Product Number: HMC980, HMC981, HMC920

Does it make sense to design a closed loop circuit for bias control of a 28V or 50V GaN amplifier?

amplifiers Optimizing GaN and GaAs RF Amplifier Performance Using Novel Biasing Techniques hmc981 RF Amplifiers Bias Controllers hmc980 rf amplifiers hmc920 Webinar Forum Show More

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sanazaim

on Feb 8, 2023 5:36 AM
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You could do this but we have not covered it in this webinar. Most of the ADI's GaN amplifiers are designed for use in radar application where the amplifier must be turned on and off very quickly, typically in the sub 1us range. It's not really practical to design a closed loop circuit with negative feedback which can switch on an off at that speed.
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sanazaim

on Feb 8, 2023 5:36 AM
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You could do this but we have not covered it in this webinar. Most of the ADI's GaN amplifiers are designed for use in radar application where the amplifier must be turned on and off very quickly, typically in the sub 1us range. It's not really practical to design a closed loop circuit with negative feedback which can switch on an off at that speed.
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