Finline Impedance

I would like to use a tapered slot antenna in finline structure as a transition between a waveguide and a microstrip line. In order to design of the optimal tapered slot antenna, I do not know how to calculate the impedance of the finline?

Hi,

there is an old and very good book

Bharathi Bhat, Shiban K. Koul ?
Analysis, Design and Applications of Fin Lines, Artech House, 1987

No, I can't upload it, thik you should borrow it from a library.

I am not the expert in the field, but think that microstrip-finline transistions tend to be very narrow band.

flyhigh