US Patent 7138960 Deployable electromagnetic concentrator

A deployable electromagnetic concentrator comprises a facet stem hub assembly having at least one rotatable segment and a plurality of facets stems coupled thereto. At least one of the facet stems is coupled to at least one of the rotatable segments. The concentrator further comprises a plurality of facet stems, each being coupled to a different one of the rotatable segments for rotating the plurality of facets from a substantially overlapping configuration to a substantially non-overlapping configuration.