{
  "annotation_id": "f493630d-62fc-4586-ae25-a1a1116232e6",
  "date_created": "2026-03-02T18:01:17.874000Z",
  "date_modified": "2026-03-02T18:01:17.874000Z",
  "file_hash": "a17cd47592ef82dab0e8590e489f1d591b200ccab5bbf240bdb23c59eacfa9a6",
  "private": false,
  "record": {
    "abstract": "Fresnel lens has a long history in optics. This concept at non-optical\nwavelengths is also applicable. In this paper we report design and fabrication\nof a half and quarter wave dielectric Fresnel lens made of Plexiglas, and a\nFresnel reflector at 11.1 GHz frequency. We made two lenses and one reflector\nat same frequency and compare their gain and radiation pattern to simulated\nresults. Some methods for better focusing action will be introduced.",
    "arxiv_id": "physics/0701247",
    "authors": [
      "Ali Mahmoudi",
      "Reza Azalzadeh"
    ],
    "categories": [
      "physics.optics"
    ],
    "doi": "10.1051/epjap:2005077",
    "journal_ref": "Eur. Phys. J. Appl. Phys. 32, 119-124 (2005)",
    "title": "Analysis, Design and Fabrication of centimeter-wave Dielectric Fresnel   Zone Plate Lens and reflector",
    "url": "https://arxiv.org/abs/physics/0701247"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "de42821f-7cc7-497d-ac39-e9b5a9f02551",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}