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Voltage Variable Attenuator [hlp]

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elec350

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hello
what is VVA (voltage variable attenuator) and its role in a power amplifier system?
 

it is an anttenuator controlled by voltage "voltage controlled attenuator".
the role in the power amplifier system , it can control the input power level for the PA to make sure that the output power is constant , it is usually employ PIN diodes

khouly
 

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    elec350

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hello khouly
you wrote
the role in the power amplifier system , it can control the input power level for the PA to make sure that the output power is constant
Click to expand...
pls explain how it is used in a power amplifier system, for example by a block diagram.
 

check the picture
38_1207497973.jpg


khouly
 

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