Abstract: A parabolic antenna comprising at least a reflector of deformable material, the reflector having a parabolic shape of a preferred curvature, and a rigid structural substrate comprising a foam sufficient to maintain the parabolic shape of the reflector against significant deviation from said parabolic shape. The deformable material of the reflector is characterized by its inability to maintain the parabolic shape of a preferred curvature in the absence of the rigid structural substrate. A method of forming the inventive antenna is disclosed, comprising the steps of: Providing a backing section and a reflector made of deformable material, the backing section and reflector being mateable to define a hollow interior cavity; maintaining the reflector on a forming die in conformance with a preferred curvature of the reflector; and injecting an expandable, foam slurry into the hollow interior cavity and curing the foam slurry to form the antenna.