Broadband microwave transition with a DC-decoupling on the basis of a screened antipodal finline

The algorithms of antipodal and antipodal bilateral finlines eigenmodes calculation and modal-S-matrix of the junction of the lines (step discontinuity) are designed. On the base antipodal and antipodal bilateral finlines the transition (impedance transformer) from air waveguide to antipodal finlines with edges overlap and DC-decoupling transition of a basic finline from the active device is optimized.