Abstract
Under the development trend of large-size antennas, the demand for modular expansion of synthetic aperture radar antennas is increasing, and the connection mechanism is an important part of the modular expansion. This paper designed and studied the connection mechanism between the basic units of the planar deployable antenna mechanism. Firstly, for the basic deployable units of a new type of planar deployable antenna spatial support mechanism proposed previously by the author, the connection mechanism between the basic units was synthesized, and a series of feasible planar deployable mechanism configurations were obtained. Meanwhile, a spatial support mechanism for planar deployable antennas with scissor was optimally constructed by analysis. Through finite element comparative analysis, it was found that the mechanism improves the stiffness and reduces the maximum deformation. Then, scale optimization was performed by using the control variable method. Finally, the prototype was developed, and experimental research was conducted to verify the feasibility of the mechanism. The spatial support mechanism of the planar deployable antenna with scissor proposed in this paper improves the reliability, stiffness, modal, and other related properties of the unfolding process. Therefore, it has broad application prospects in the field of aerospace deployable antennas.
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