ケーブルメッシュアンテナの高精度化に向けた鏡面設計法

抄録

Cable mesh antenna had been applied to the ETS-VIII and the HALCA. The trend of antennas technology is large aperture diameter and using at high frequency band. Therefore, cable mesh antenna is required for high surface accuracy and light weight. In addition, the radio frequency of antennas depends on surface accuracy. In order to design antennas of high gain and high directivity, the cable network structure is one of the important structural elements. However, surface error of cable mesh antenna generates for several factors, manufactural error, deployment repeatability, plane approximation and orbital deformation. Particularly, thermal deformation accounts for a major factor of surface accuracy. The deformation of deployable structure generates degradation of surface accuracy. Therefore, the shape stabilization of the cable network structure is important for high accuracy antennas. However, conventional study had been not obtained that relationship between shape stabilization of the cable network structure and cable rigidity. Therefore, this paper described a design method of cable network structure considering the deformation of deployable structure.