substrates choosing for high power combiner

please help me how to high frequency substrate for high power combiner,power handling of substrate should be more than 100w

What frequency and impedance level?

Hi

Generally u can use with FR4 if u working up to few GHz and no more than 100w
But if u want be sure u can go for Rogers (Taconic have pretty similar par like Rogers but they cheaper).

If u need more info please supply more info like F, do u have size issues etc...

David