Three types of microwave waveguide multichannel power dividers base don H-plane ghbrid junctions (Fig.1) E-plane T-joint (Fig.2), H-plane launcher of higher waveguide modes (Fig.3), are represented in the work. Mathematically exact investigation of such devices have been done by means of the system of electrodynamic simulation (SEM) (1), which consisted in decomposing of boundary problem on a set of elementary discontinuites of irregular waveguide. These were: angle bend, half-infinity bifurcation in H-plane and the same discontinuities in E-plane.
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