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<p>Integrated radio-frequency (RF) photonics plays a pivotal role in wireless communications, sensing, and radar applications. However, the bulky feature of essential RF components still constrains practical deployments in covert, conformal, and space-limited applications. As a promising solution through synergistic integration of both RF and photonics, we demonstrate a photonic RF receiver chip integrating a bow-tie antenna and a microring modulator on thin-film lithium niobate platform. The chip leverages a dual-resonance enhancement mechanism, combining RF and optical resonances, to significantly boost the RF-to-optical conversion efficiency. A record-high figure of merit of 3.88 W<sup>−1/2</sup> was achieved within a compact footprint of 2 × 1.7 mm<sup>2</sup>. Following full packaging, the receiver enabled centimeter-level radar ranging accuracy, 3.2 Gbps wireless communication capacity, and real-time high-definition video transmission in moving scenarios. This work paves a viable way toward covert, conformal, and miniature photonic RF frontends for unmanned aerial vehicles, high-speed trains, and electronic warfare systems.</p>

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Synergistic antenna-modulator integration for a monolithic photonic RF receiver

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年6月2日

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  • Changlin Liu,
  • Yongtao Du,
  • Xihua Zou,
  • Fang Zou,
  • Jiejun Zhang,
  • Junkai Zhang,
  • Xiaojun Xie,
  • Wei Pan,
  • Lianshan Yan,
  • Jianping Yao

摘要

Integrated radio-frequency (RF) photonics plays a pivotal role in wireless communications, sensing, and radar applications. However, the bulky feature of essential RF components still constrains practical deployments in covert, conformal, and space-limited applications. As a promising solution through synergistic integration of both RF and photonics, we demonstrate a photonic RF receiver chip integrating a bow-tie antenna and a microring modulator on thin-film lithium niobate platform. The chip leverages a dual-resonance enhancement mechanism, combining RF and optical resonances, to significantly boost the RF-to-optical conversion efficiency. A record-high figure of merit of 3.88 W−1/2 was achieved within a compact footprint of 2 × 1.7 mm2. Following full packaging, the receiver enabled centimeter-level radar ranging accuracy, 3.2 Gbps wireless communication capacity, and real-time high-definition video transmission in moving scenarios. This work paves a viable way toward covert, conformal, and miniature photonic RF frontends for unmanned aerial vehicles, high-speed trains, and electronic warfare systems.