Hello Joel...
Thankx for the reply, it helped.
I am thinking of using a branch line coupler for power combining with the inputs as high as 100W. So, we can expect 200W at the output, right ?. I am using RO4350B substrate at 1.8425GHz freq. I tried using mwi software of roger. And it shows me to use the same 67mil width line for 50ohm at 200W also. Is that, a normal transmission line`s power handling capacity matters only at high freqs like some 5GHz ? and does`nt matters for my design ???