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 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 re-configurable magnetoinductive waveguide (300), comprising a plurality of resonator cells, wherein each resonator cell comprises a primary resonator (110) that is inductively coupled to a primary resonator (110) of at least one other resonator cell, and wherein at least one of the plurality of resonator cells is a controllable cell (100) which further comprises a control element (120), the control element (120) having an active control component (125) that is operable to adjust the impedance of the primary resonator (110) of the controllable cell (100) in response to a control signal; wherein: the control element (120) comprises a secondary resonator, the secondary resonator is inductively coupled to the primary resonator (110), and the active control component (125) is arranged to vary the electrical properties of the secondary resonator in response to the control signal.

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 re-configurable magnetoinductive waveguide (300), comprising a plurality of resonator cells, wherein each resonator cell comprises a primary resonator (110) that is inductively coupled to a primary resonator (110) of at least one other resonator cell, and wherein at least one of the plurality of resonator cells is a controllable cell (100) which further comprises a control element (120), the control element (120) having an active control component (125) that is operable to adjust the impedance of the primary resonator (110) of the controllable cell (100) in response to a control signal; wherein: the control element (120) comprises a secondary resonator, the secondary resonator is inductively coupled to the primary resonator (110), and the active control component (125) is arranged to vary the electrical properties of the secondary resonator in response to the control signal.

Abstract: A common communications device comprising an array of near-field coupled resonant elements, the elements each comprising a coupling portion comprising a loop portion with free ends, the device being provided in combination with a data transmission unit and a data reception unit, each unit having a coupling portion, the units being arranged to communicate with one another by means of the coupling portion of each unit and the common communications device, the coupling portion of the data transmission unit comprising a resonant element comprising a loop portion arranged to be near-field coupled to the loop portion of a first resonant element of the device, the coupling portion of the data reception unit comprising a resonant element comprising a loop portion arranged to be near-field coupled to the loop portion of a second resonant element of the device not being the first resonant element.

Abstract: A common communications device comprising an array of near-field coupled resonant elements, the elements each comprising a coupling portion comprising a loop portion with free ends, the device being provided in combination with a data transmission unit and a data reception unit, each unit having a coupling portion, the units being arranged to communicate with one another by means of the coupling portion of each unit and the common communications device, the coupling portion of the data transmission unit comprising a resonant element comprising a loop portion arranged to be near-field coupled to the loop portion of a first resonant element of the device, the coupling portion of the data reception unit comprising a resonant element comprising a loop portion arranged to be near-field coupled to the loop portion of a second resonant element of the device not being the first resonant element.