RF choke required to block out 1-9 GHz

Hello and thanks for reading. As the subject states I require an RF choke to protect the DC bias from RF signals generated by an antenna (active antenna) that operates over the band 1-9 GHz. The main limitation is that I require components and cannot use a radial stub to achieve the choke design.

My insight tells me that if I can find a 100uH RF choke I will be fine but im not entirely sure this will work.

Any comments or suggestions would be appreciated.

Thanks

Broadband Conicals

You can try Mini-Circuits.

Ideally you need the reactance of the choke to be at least 4 times greater than the characteristic impedance of the tline feeding the antenna.


So I'm not sure why you are considering a 100uH choke as you would be better off with something around 100nH.

You could also look at Coilcraft as they produce some conical chokes that are suitable for your frequency range.