Analysis of the Microstrip-Slotline Crossing

Crossings between microstrip and slotline sharing the same substrate provide a flexible design tool encountered in a number of components such as directional couplers, transitions and subsystem as balanced mixers. The present contribution develops a conceptually simple, accurate and highly efficient analysis valid for any arbitrary angle of crossing between open microstrip and slotline. Quasi-analytical formulae are obtained suitable for desktop computation.