@mastersthesis{TUW-110011, author = {Lischka, Georg}, title = {Design and Realization of Microstrip-Transitions up to 90 GHz}, school = {Institut f{\"u}r Nachrichtentechnik und Hochfrequenztechnik}, year = {2006}, url = {http://publik.tuwien.ac.at/files/pub-et_10919.pdf} }