microstrip to slotline transition

Hi all,

does any one give me some ideas on how to design ms2slotline transition at 5 to 15 GHz, I'm designing a tapered slot antenna.

aze.

http://my.ece.ucsb.edu/yorklab/Usefu...n%20MOTL98.pdf
http://www.ansoft.com/news/articles/04.09a_MWJ.pdf