1-18.0 GHz directional coupler

[kumarkaushal]

Can any one tell me the design for the 3 dB , 1-18.0 GHz directional coupler .
which directional coupler out of coupled microstrip line ,lange coupler and branch line coupler can be used to realise it ?

 

[biff44]

try a wilkensen splitter

 

[guytoub]

i think he wanted to say " wilkinson splitter"

regards