One example of a plurality of embodiment of the present disclosure includes a structure. The structure includes first pair conductors and at least one unit structure. The first pair conductors are positioned separate from each other in a first direction. The unit structure is positioned between the first pair conductors. The unit structure includes a second conductor and a third conductor. The unit structure includes at least one unit resonator. The third conductor extends in an xy plane including an x direction. The third conductor is electrically connected to the first pair conductors. The third conductor serves as a reference potential of the structure. The unit resonator overlaps with the third conductor in a z direction intersecting with the xy plane. The unit resonator uses the third conductor as the reference potential.