{
  "abstract": "A V-band substrate-integrated waveguide (SIW) leaky-wave antenna with enhanced frequency-scanning capability is presented. The antenna consists of a uniform fast-wave SIW radiating section excited through a grounded coplanar waveguide (GCPW)-to-SIW transition incorporating an etched magnetic-dipole (M-dipole) horn. Frequency-dependent beam scanning arises from the dispersive phase constant of the dominant TE $$_{10}$$ mode in the SIW radiating section, while the GCPW transition couples quasi-TEM feed excitation into the TE $$_{10}$$ SIW aperture mode. The etched M-dipole horn introduces a localized boundary perturbation at the excitation interface, producing a frequency-dependent change in the extracted effective phase constant and increasing the dispersion slope. As a result, the measured scanning range expands from 22 $$^\\circ$$ for the standalone LWA to 40 $$^\\circ$$ over 58.6–62.5 GHz, corresponding to a scanning rate of 621.11 $$^\\circ$$ per unit fractional bandwidth. The fabricated prototype achieves 12.9 dBi peak realized gain and radiation efficiency exceeding 85%. The proposed transition-assisted scanning approach is suited for compact mmWave radar sensing, V2X short-range communication, UAV links, and beam-steerable front ends where periodic loading or multilayer slow-wave structures increase design complexity.",
  "abstract_shown": true,
  "affiliations": [
    "The University of Texas at Dallas"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 2,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Pallav Kumar Sah"
    },
    {
      "affs": [
        0
      ],
      "name": "Ifana Mahbub"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/3hrnrh0vsr9qj.bib",
  "cited_by": 0,
  "doi": "10.1038/s41598-026-60365-5",
  "fulltext_url": "https://doi.org/10.1038/s41598-026-60365-5",
  "id": "3hrnrh0vsr9qj",
  "issns": [
    "2045-2322"
  ],
  "landing_url": "https://doi.org/10.1038/s41598-026-60365-5",
  "language": "en",
  "licence": "CC-BY",
  "licence_label": "CC BY",
  "licence_source": "journal",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "lcc",
      "Q"
    ],
    [
      "lcc",
      "R"
    ],
    [
      "openalex",
      "2208|Microwave Engineering and Waveguides"
    ]
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  "openalex": "W7169715332",
  "pdf_url": "https://www.nature.com/articles/s41598-026-60365-5.pdf",
  "pmcid": null,
  "pmid": null,
  "published": "2026-07-01",
  "publisher": "Nature Portfolio",
  "ris": "https://research.draconitic.com/paper/3hrnrh0vsr9qj.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T13:45:48Z",
      "native_id": "c019f59e30de4c2ca6f748a67e0791a4",
      "source": "doaj",
      "url": "https://doi.org/10.1038/s41598-026-60365-5"
    }
  ],
  "subjects": [
    {
      "field": "medicine",
      "origin": "lcc:R",
      "subfield": "general"
    }
  ],
  "title": "Transition-induced phase modification for scanning rate enhancement in a fast-wave V-band SIW leaky-wave antenna",
  "title_text": "Transition-induced phase modification for scanning rate enhancement in a fast-wave V-band SIW leaky-wave antenna",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T13:45:48Z",
  "url": "https://research.draconitic.com/paper/3hrnrh0vsr9qj",
  "venue": "Scientific Reports",
  "versions": []
}