Patent ID: 6911958

Claim:
A back-up structure for parabolic dish antenna comprising: a central hub; an assembly of plurality of radial structural members connected to the central hub on one end and spread out radially from the hub in an umbrella like configuration and extending to a circular rim at the end away from the hub, each said radial structural members obtained of material of high tensile strength and as a single piece structural unit which is elastically bent and bowed to define a substantially parabolic pre-stressed structure; a plurality of structural rim members connected rigidly to the radial members towards the rim end thereof; a plurality of bracing members disposed at intermediate locations on the radial structural members between the hub and the rim ends, said bracing members being substantially parallel to the structural rim members; said radial members, rim members and bracing members tensioned to specific selective stress values such as to thereby store desired internal elastic strain energy to resist gravitational and static and dynamic wind forces.