{
  "annotation_id": "d1ff3697-f797-440e-af4b-ce6c650d3930",
  "date_created": "2026-03-02T18:01:14.469000Z",
  "date_modified": "2026-03-02T18:01:14.469000Z",
  "file_hash": "644bcc27a5de25f35b198b959208e273bf7545814d760bcab6b4086011f79d3e",
  "private": false,
  "record": {
    "abstract": "We study the characteristics and radiation mechanism of antenna superstrates\nbased on closely located periodical grids of loaded wires. An explicit\nanalytical method based on the local field approach is used to study the\nreflection and transmission properties of such superstrates. It is shown that\nas a result of proper impedance loading there exists a rather wide frequency\nband over which currents induced to the grids cancel each other, leading to a\nwide transmission maximum. In this regime radiation is produced by the magnetic\ndipole moments created by circulating out-of-phase currents flowing in the\ngrids. An impedance matrix representation is derived for the superstrates, and\nthe analytical results are validated using full-wave simulations. As a\npractical application example we study numerically the radiation\ncharacteristics of dipole antennas illuminating finite-size superstrates.",
    "arxiv_id": "physics/0701035",
    "authors": [
      "Pekka Ikonen",
      "Elena Saenz",
      "Ramon Gonzalo",
      "Sergei Tretyakov"
    ],
    "categories": [
      "physics.class-ph"
    ],
    "doi": "10.1109/TAP.2007.905926",
    "journal_ref": "IEEE Trans. Antennas and Propag., vol. 55, no. 10, pp. 2692-2700,\n  2007.",
    "title": "Modeling and Analysis of Composite Antenna Superstrates Consisting on   Grids of Loaded Wires",
    "url": "https://arxiv.org/abs/physics/0701035"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "9321ecc5-8a44-43af-af91-674873829dcc",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}