Abstract: The present invention relates to an electrical resonator (10), and an array (30) comprising a plurality of the electrical resonators (10). The electrical resonator (10) comprises an inductor coil comprising at least one turn. The at least one turn comprises an outer turn defining an outer coil perimeter (14). The electrical resonator comprises at least one capacitor connected to the inductor coil. The outer coil perimeter (14) comprises four major edges (141). Each of the major edge (141) is substantially linear and arranged on a different edge of a quadrilateral. The outer coil perimeter (14) comprises four minor edges (142) connecting the major edges (141). The array (30) comprises a first plurality of the electrical resonators (10a) arranged in a first layer, and a second plurality of the electrical resonators (10b) arranged in a second layer on top of the first layer.

Abstract: A method of configuring a metamaterial structure comprising a plurality of electrical resonators (110) that support magnetoinductive waves is disclosed. The method comprises: powering at least one of the electrical resonators (110) with an alternating current at an excitation frequency, the at least one powered electrical resonator providing a source of magnetoinductive waves in the structure; adjusting parameters of the metamaterial structure to create constructive interference of one- two- or three-dimensional magnetoinductive waves at one or more target resonators of the electrical resonators (110), to improve power transfer from the at least one powered electrical resonator to the one or more target resonators (110).

Abstract: A method of determining a position of an object relative to an array of resonator elements for wireless transmission of power by electromagnetic coupling between adjacent resonator elements is disclosed. The object is inductively coupled to the array. The method comprises determining an input signature of the array with the object coupled thereto, measured at a probe resonator of the array. The method also comprises determining the position of the object relative to the array with reference to the input signature.

Abstract: A method of configuring a metamaterial structure comprising a plurality of electrical resonators (110) that support magnetoinductive waves is disclosed. The method comprises: powering at least one of the electrical resonators (110) with an alternating current at an excitation frequency, the at least one powered electrical resonator providing a source of magnetoinductive waves in the structure; adjusting parameters of the metamaterial structure to create constructive interference of one- two- or three-dimensional magnetoinductive waves at one or more target resonators of the electrical resonators (110), to improve power transfer from the at least one powered electrical resonator to the one or more target resonators (110).