EXPANDING ANTENNA

PROBLEM TO BE SOLVED: To provide an expanding antenna where occurrence of irregular wrinkles due to contact between metallic meshes and local plastic deformation is prevented even in a state other than the expanded state. SOLUTION: An expanding antenna has plane trusses 1 that are configured to be changed from a square frame state into a folded rod, a 3-dimension truss structure 2 where the trusses are folded and expanded around a center shaft C by placing a plurality of the plane trusses radially from the folding center shaft C, and a reflection mirror face 5 consisting of a plurality of cables 3 and metallic meshes 4 that is fitted to the 3-dimension truss structure 2. In this case, a plurality of support rods 8 extended radially from the center shaft C are placed to positions corresponding between the plane trusses 1 and as the plane trusses 1 are folded along the center shaft C, the reflection mirror face 2 is contained in the 3-dimension truss structure 2 so as to follow the support rods 8.