Coupling structure, resonant structure, low-frequency radiation unit, antenna and electromagnetic boundary

A coupling structure, comprising at least two layers of conductors in a capacitive coupling relationship, wherein, each layer of conductors comprises a plurality of conductor strips side by side and having a gap, wherein at least one of the plurality of conductor strips of the same layer has an electrical potential difference from an adjacent conductor strip during operation, and wherein between the plurality of conductor strips of two different layers, at least one of the plurality of conductor strips of one layer of the two different layers has an electrical potential difference from at least one of the plurality of conductor strips of the other layer, and the two different layers at least partially overlap in a direction of a mutual projection with each other;

• wherein, the plurality of conductor strips of each layer of conductors operate at two relative electrical potentials, a high electrical potential and a low electrical potential, with part of the plurality of conductor strips operating at the high electrical potential and the other part of the plurality of conductor strips having a coupling relationship with them operating at the low electrical potential;
• and
• wherein, the conductor strip operating at the high electrical potential is connected to one conductor section, and the conductor strip operating at the low electrical potential is connected to another conductor section.