series LC feedback network

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MI3talk

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Hi all,

Have a general question about series LC feedback network that connect between gate & drain of the FET.

i am trying to have a good gain flatness in my amp from 50MHz to 2.6GHz within 1dB margin. Now my S21 @ 50MHz is 28dB, and gain @ 1.7GHz and 2.6GHz is around 19.5dB.

Thanks!
 

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