{
  "$type": "site.standard.document",
  "description": "A low-frequency multiferroic mechanical antenna amplified with a multifunctional metamaterial beam is provided, relating to the technical field of antennas. The array includes multiple unit arrays each consisting of a strong-hysteresis piezomagnetic layer, a high-magnetic-permeability piezomagnetic…",
  "path": "/patents/1389905",
  "publishedAt": "2026-06-11T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01Q15/0086",
    "Shanghai Jiao Tong University"
  ],
  "textContent": "A low-frequency multiferroic mechanical antenna amplified with a multifunctional metamaterial beam is provided, relating to the technical field of antennas. The array includes multiple unit arrays each consisting of a strong-hysteresis piezomagnetic layer, a high-magnetic-permeability piezomagnetic film unit, and a piezoelectric layer, a grid-shaped shuttle composite beam with variable stiffness that is composed of a first elastic substrate, a flexible piezoelectric material PVDF layer, and a second elastic substrate, a permanent magnet, an energy harvesting circuit, and a negative resistance circuit. Elastic standing waves generated by a piezoelectric array under excitation enhances a magnetic moment oscillation effect of the permanent magnet at the end of the beam through variable stiffness characteristics of the elastic substrate in the composite beam and strain convergence characteristics of a shuttle-shaped structure; vibration of the permanent magnet and a magnetostrictive effect of a piezomagnetic film together generate an emitted alternating magnetic field.",
  "title": "LOW-FREQUENCY MULTIFERROIC MECHANICAL ANTENNA AMPLIFIED WITH MULTIFUNCTIONAL METAMATERIAL BEAM"
}