How to design DC bias network and the blocking network

[3bweh]

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

 

[shogun]

Re: DC bias networks

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

 

[GVVIN]

Re: DC bias networks

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

 

[3bweh]

Re: DC bias networks

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