%0 Journal Article %T High directivity microstrip couplers for impedance transforming %A Gołaszewski, Arkadiusz %A Żukociński, Mateusz %A Abramowicz, Adam %J Proceedings of SPIE %V 11176 %P 111765X-111765X-7 %@ 0277-786X %D 2019-11-06 %I SPIE %~ DeepDyve