Packaging and deployment strategies for synthetic aperture radar membrane antenna arrays

Abstract

The performance of spaceborne synthetic aperture radar (SAR) is limited by the size and therefore the areal density of the antenna array. Conventional arrays consist of radiating elements mounted on hinged panels that are relatively heavy. In order to produce larger arrays capable of operating at higher altitudes, or to support comparable SAR payloads on smaller spacecraft, a lighter structure such as one using membranes must be used. Membrane antenna arrays have been developed, but deployment remains a challenge. This paper describes possible techniques to package and deploy membrane structures that can support these antenna arrays.

“2D or not 2D”: Shape-programming polymer sheets

“…smart packaging; deployable structures (Figure 27c);[251,[400][401][402][403][404]and shape-shifting mobile devices [28]. Conclusion, opportunities, and challenges for shape programming Shape-programming of materials from 2D sheets to 3D shapes is appealing in many applications including reconfigurable devices, responsive actuators, and assembly processes.…”

Reprogrammable Self-Folding Thermoplastic Sheets Using Elastic Filaments

“…Self-folding can be used to manufacture objects and change the shape of objects to impart function. For example, materials can be transported as flat sheets and transformed into the final product onsite. , This feature is useful when considering sending objects to outer space . Likewise, changing the shape of materials can enable efficient energy harvesting and storage, − significantly alter the effective mechanical properties of structures, and enable grippers, actuators, and 3D electronics .…”