PURPOSE: To remove natural faults and to reduce the number of parts by fitting a rim to the end part of a mirror surface, providing a reinforcing rib on the rearside of the border of the mirror and fixing a fitting blacket unitedly as a casting material.
CONSTITUTION: A parabolic antenna 1 is constituted so as to use a parabola for the minimum opening diameter (a) maximum opening diameter (b) and not to arrange an axial focus for receiving within a straight advancing range of receiving waves. An Al material is used for the mirror surface of the antenna 1 part, and if necessary, a radial rib 4 is used for the whole circumference of the end surface of the rear side of the mirror surface and the fitting blacket 5 is formed unitedly as a casting material to reinforce the mirror cirface 2. Consequently, normal radio waves excluding natural faults can be received constantly. In addition, the man-hour for fitting processes and the number of parts can be reduced.
| JPS58964 | [Title of the device] Antenna Southern |
| JPS5927609 | [Title of the device] Offset antenna |
| JPS61157104 | EXPANSION TYPE ANTENNA REFLECTING MIRROR |
MORITA SHIGETAKA
SASAKI MIKIO
