Broadband planar Bias-Tee

Hello,

i am designing a wideband LNA right now and would like to replace the Piconics conical inductors we are using right now with a planar Bias-Tee.

My bandwidth is from 1-9 GHz so i cannot realize it with a quarter wavelength line and a radial stub. Is there a way to use a form of cascaded design with radial stubs or some kind of broadband transformer?

Please give me some tips on further research if you like!

Sincerely

Chris