| 摘要 |
PROBLEM TO BE SOLVED: To constitute an antenna which is satisfactory in electrical characteristics without causing any burrs or raggedness due to punching taper or extruding pins in the assembly structure of a planar antenna, in which power supply to a slot array radiating element is operated by a microwave circuit (waveguide). SOLUTION: An antenna case 1 is provided as the united structure of three casing parts, that is, a first casing part 11 in which a distribution feeding waveguide 6 is formed from an antenna-feeding part 8, second casing part 12 in which straight feeding waveguides 5 distribution-fed by the distribution feeding waveguide 6 are formed, and third casing part 13 in which the end edge face of the straight feeding waveguides 5 is formed. Then, the second casing part 12 forming the straight feeding waveguides 5 at the largest partial rate of the entire case 1 is constituted by extrusion molding. |
