How to design DC bias network and the blocking network

i a designing a broadband amplifier 2-4 GHz

iam faceing a problem regarding the DC bias network; it seems that i cant design a blocking network to block DC at RF freq.

Need help and suggestions for the whole bias network and a way to design the blocking network

thanks

What frequency range are you working with, a Simple DC block is a capacitor that has a self resonant frequency well above what you are working on.

Regards

Shogun

I guess what you want is a biasing circuit that blocks RF signal going into DC lines. correct ?

yep ... thats it
which also blocks DC from going to RF at high frequencies
ive tried a lot of things but still face problems