{
  "abstract": "This work investigates how negative differential resistance (NDR) can be utilized to enhance conversion gain in superconducting niobium nitride (NbN) hot-electron bolometer (HEB) mixers. Conventional HEB operation avoids NDR regions due to parasitic oscillations caused by interactions between thermal inertia and bias-line reactance. Recent experimental results show that reducing the bias-T inductance suppresses these oscillations and enables stable biasing within the NDR regime, thereby increasing the mixer conversion gain beyond levels achievable under positive differential resistance (PDR) bias. Using a lumped thermal-electrical model, we interpret these experimental findings, derive stability conditions for NDR-biased operation, and predict the future performance limits achievable through optimized bias circuit designs. Our results indicate that further reductions in bias inductance, combined with appropriate load-line conditions, could yield several decibels of additional gain while maintaining practical IF bandwidths.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.32112",
  "author_total": 2,
  "authors": [
    {
      "name": "Boris S. Karasik"
    },
    {
      "name": "Changyun Yoo"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/dz8ryth0ea8nv.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.32112",
  "fulltext_url": null,
  "id": "dz8ryth0ea8nv",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.32112",
  "language": null,
  "licence": "CC-BY-NC-SA-4.0",
  "licence_label": "CC BY-NC-SA 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "astro-ph.IM"
    ],
    [
      "arxiv",
      "physics.ins-det"
    ],
    [
      "openalex",
      "3103|Superconducting and THz Device Technology"
    ]
  ],
  "openalex": "W7214803346",
  "pdf_url": "https://arxiv.org/pdf/2609.32112",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-26",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/dz8ryth0ea8nv.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:25:12Z",
      "native_id": "2609.32112",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.32112"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.IM",
      "subfield": "instrumentation-methods"
    },
    {
      "field": "physics",
      "origin": "arxiv:physics.ins-det",
      "subfield": "applied-instrumentation"
    }
  ],
  "title": "Enhancing Conversion Gain in HEB Mixers using Negative Differential Resistance",
  "title_text": "Enhancing Conversion Gain in HEB Mixers using Negative Differential Resistance",
  "type": "preprint",
  "updated_at": "2026-10-30T12:25:12Z",
  "url": "https://research.draconitic.com/paper/dz8ryth0ea8nv",
  "venue": "arXiv",
  "versions": []
}