A fresh approach to the design of metamaterials formed from closely spaced helices is developed based on the retrieved values of electric and magnetic coupling coefficients between adjacent helices. A coupling retrieval method has been implemented to obtain numerical and experimental values for both electric- and magnetic-coupling coefficients between helical elements. Couplings between both right- and left-handed helices in side-by-side and axial arrangements are evaluated providing both positive and negative electric-, as well as magnetic-coupling components. The dependence of coupling strength on separation distance, relative axial rotation, helical pitch and the geometrical arrangement of the helices has been quantified both numerically and experimentally and a geometry giving zero net-coupling between very close helices is illustrated.

基于检索到的相邻螺旋之间的电磁耦合系数值，开发了一种设计由紧密间隔螺旋形成的超材料的新方法。已实施耦合检索方法以获得螺旋元件之间的电耦合和磁耦合系数的数值和实验值。评估并排和轴向排列的左右手螺旋之间的耦合，提供正负电耦合和磁耦合组件。耦合强度对分离距离、相对轴向旋转、螺距和螺旋几何排列的依赖性已通过数值和实验量化，并说明了在非常接近的螺旋之间给出零净耦合的几何结构。