impedance on bowtie antenna

how to calculate impedance along a bowtie antenna with cst ?
not just at the feeding point but along the antenna on every place at the antenna.
thanks in advance

u can put some sensors ..one option is there in CST to do that

can u explain which port can i put and where can i find them at the simulation .

thanks in advance

i am also interested in finding the impedance along the length of the antenna and not just at the feeding point in cst

any help would be great

regards