  The effect of Poisson's ratio to the reflector reshaping is investigated
through mechanical study of reconfigurable reflectors in this paper. The value
of Poisson's ratio corresponding to the minimum deforming stress is given and
an auxetic lattice is proposed for the reflector surface. The parameters of the
auxetic lattice are investigated for vary Poisson's ratio. A case of
reconfigurable reflector is studied, the curvature change and strain are
calculated by surface geometry analysis, and the negative Poisson's ratio is
established for vary thickness. According to RMS calculation by the FEM
structure analysis, the thickness can finally be established.
