Patent
Unfurlable sparse array reflector system
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TLDR
In this paper, an unfurlable reflector antenna system with one or more arms that are each shaped in the form of a parabolic right cylinder when it is unfurled is described.Abstract:
An unfurlable reflector antenna system having one or more unfurlable arms that are each shaped in the form of a parabolic right cylinder when it is unfurled. Each arm comprises an RF reflecting membrane or a thin shell as the reflector structure. Each arm is coupled by way of a line feed to a receiver. The system is specifically designed for use on a spacecraft. Each arm may be stowed by flattening the parabolic membrane or shell, and then rolling up the arm, which is accomplished without stretching. The sparse reflector antenna array system is thus stowable in a compact configuration, yet easily unfurls to provide a very large diameter lightweight reflector.read more
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Patent
Self-deploying helical structure
TL;DR: A helical antenna structure is deformable and capable of being stowed in a small volume as mentioned in this paper, and it can revert to its original shape without the use of any outside force using a plurality of resilient lenticular shaped hinges.