| 摘要 |
A foaming material is charged between a spherical lens (14) and a radome (33), to form a foaming material layer (34), thereby to connect the both and support the spherical lens (14) from the side of the radome (33), in order to provide an easily manufacturing and assembling method having excellent electrical properties, when providing an antenna capable of tracking a plurality of communication satellites and being installed in compact in a relatively small space. The foaming material layer (34) is set at the same dielectric constant as that of the spherical lens (14) or lower than that. Since the radome (33) supports the spherical lens (14), any special supporting instrument is not necessary. Electrical deterioration occurs to the radome (33) only, not to the supporting instrument. Generally, the radome (33) is little affected by the electrical deterioration and the permeability of the electric waves is uniform, the permeable electric waves are hardly affected. <IMAGE> |
