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input/output coupling capacitors for LNA

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anhnha

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Hi.

I am wondering about coupling capacitor value. What are criteria in choosing input/output coupling capacitors for LNA at 1.5GHz?
They are parts of input and output matching networks. However, I think to design the input/output matching network we need to determine the values of these capacitors first.
 

I think impedance needs to be considered and also the matching of the networks..
For this first you need to ensure the stages before these are verified
 

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