A foldable and expandable antenna reflector support structure to support an expandable generally dish shaped reflector , the reflector support structure comprising: a hub assembly to provide a force to the support structure ; a hub tower extending from the hub assembly ; a plurality of drive strut assemblies , each drive strut assembly having an inner drive strut , an outer drive strut and a strut hinge assembly so that the inner drive strut can pivot with respect to the outer drive strut so that each drive strut assembly can fold or expand, and at least one drive strut assembly is connected to the hub assembly and is configurable to receive a force from the hub assembly ; and a plurality of rib assemblies , each rib assembly having an inner rib , an outer rib , and a multi-piece rib hinge assembly so that the inner rib can pivot with respect to the outer rib , and each inner rib is pivotably connected to the hub tower , wherein the support structure has a first folded configuration and a second expanded configuration and each drive strut assembly is pivotably connected to one of the rib assemblies and is configured to apply a force to that rib assembly to rotate the outer rib with respect to the inner rib in response to the hub assembly applying the force to the at least one of the drive strut assemblies to thereby fold or expand the reflector support structure from the first folded configuration to the second expanded configuration, characterized in that the inner drive strut is configured to rotate approximately 180 degrees with respect to the outer drive strut and in response the outer rib is configured to rotate approximately 180 degrees with respect to the inner rib . a hub assembly to provide a force to the support structure ; a hub tower extending from the hub assembly ; a plurality of drive strut assemblies , each drive strut assembly having an inner drive strut , an outer drive strut and a strut hinge assembly so that the inner drive strut can pivot with respect to the outer drive strut so that each drive strut assembly can fold or expand, and at least one drive strut assembly is connected to the hub assembly and is configurable to receive a force from the hub assembly ; and a plurality of rib assemblies , each rib assembly having an inner rib , an outer rib , and a multi-piece rib hinge assembly so that the inner rib can pivot with respect to the outer rib , and each inner rib is pivotably connected to the hub tower , wherein the support structure has a first folded configuration and a second expanded configuration and each drive strut assembly is pivotably connected to one of the rib assemblies and is configured to apply a force to that rib assembly to rotate the outer rib with respect to the inner rib in response to the hub assembly applying the force to the at least one of the drive strut assemblies to thereby fold or expand the reflector support structure from the first folded configuration to the second expanded configuration, characterized in that the inner drive strut is configured to rotate approximately 180 degrees with respect to the outer drive strut and in response the outer rib is configured to rotate approximately 180 degrees with respect to the inner rib . <EOS>