PURPOSE: To distribute and mix electric power through thin, light-weight feeding devices for array antennas by providing two parallel flat plate bodies made of parabolically crooked metallic plates to the parallel metallic flat plates for feeding and energizing.

CONSTITUTION: The parallel flat plate part 14 consists of the metallic flat plates 15a and 15b and on dielectric substrates 16, strip lines 17 are printed; and dielectric substrates 18 are mounted on the substrates 16 and on the top surfaces of the substrates 18, metallic conductors 19 having slots 23 are formed. The lines 17 and flat plate 15 are connected mutually by a metallic conductor 20 and a radio wave absorber 21 and a metallic side plate 22 are fitted. The side plate 22 is parabolic and the flat plate part 14 has pillbox antenna structure. Two plate parts 14 formed as mentioned above are provided and hybrid circuits 30 and 33 are connected to output terminals 24 and 25, and 28 and 29 provided near the focus of the side plate 22. At the opening part of the plate part 14, an energizing terminals in a linear array are provided and terminals of the strips 17 are connected through the conductor 20. Thus, the thin, lightweight feeding device is obtained.