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Deployable frame-cable antenna, which mainly consists of a mesh reflector, a supporting ring (frame) structure and a number of tie cables, is one of the frequently used types of deployable antennas for space applications.The structure is stowed in satellite during launch and deployed in the orbit.Pretension forces of the cables must be carefully designed and adjusted on ground in order to obtain high reflector shape precision and the total structure should be as light as possible whilst satisfying strength and stiffness requirements.In this paper, the structural optimization problem of a frame-cable antenna is discussed in detail.The contents are as follows.