Electromagnetic band-gap structure design using the auxetic unit-structure for easily controllable tunability

摘要: Tunable electromagnetic band-gap structures for matching an intended range have more potential various applications than ordinary with a fixed or non-linearly variable range. However, there has not been much progress on the study of appropriate shape structure. To obtain controllable and tunable band-gap, we propose new design concept employing unit-structure negative Poisson's ratio close to −1 realize approximately linear shift according variation We used structural optimization procedure based phase field method unit-structure. investigated relation between auxetic deformation change in through numerical simulations also evaluated possibility experimentally radio frequency