Hybrid digital-analog beamforming architecture for rapid beam steering based on microwave photonics.

IF 3.1 2区物理与天体物理 Q2 OPTICS

Optics letters Pub Date : 2025-06-15 DOI:10.1364/OL.561016

Yufei Fu, Jiazhen Cai, Jingcan Ma, Wenxin Guo, Tingrui Qi, Xinlu Gao, Lei Zhang, Zhennan Zheng, Shanguo Huang

引用次数: 0

Abstract

This Letter proposes a hybrid digital-analog microwave-photonics beamforming architecture, which is highly suitable for space-ground integrated network communications due to its high scanning speed and precise pointing capabilities. The frontend digital module generates phase-coded microwave waveform at different slopes, while the backend analog module aligns the beamforming using fixed optical true-time delays to achieve beam pointing in various directions. Beam switching is controlled solely by digital encoding, enabling an arbitrary angle switching time of less than 5 ns. Experiments demonstrate that the beam pointing error is less than 0.70° for four phase slopes.

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基于微波光子学的快速波束导向混合数模波束形成结构。

本文提出了一种混合数模微波-光子波束形成架构，该架构具有高扫描速度和精确指向能力，非常适合于空间-地面综合网络通信。前端数字模块产生不同斜率的相位编码微波波形，而后端模拟模块使用固定的光学实时延迟对波束形成进行对齐，以实现波束指向各个方向。波束切换完全由数字编码控制，使任意角度切换时间小于5ns。实验表明，在4个相位斜率下，光束指向误差小于0.70°。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Optics letters 物理-光学

CiteScore

6.60

自引率

8.30%

发文量

2275

审稿时长

1.7 months

期刊介绍： The Optical Society (OSA) publishes high-quality, peer-reviewed articles in its portfolio of journals, which serve the full breadth of the optics and photonics community. Optics Letters offers rapid dissemination of new results in all areas of optics with short, original, peer-reviewed communications. Optics Letters covers the latest research in optical science, including optical measurements, optical components and devices, atmospheric optics, biomedical optics, Fourier optics, integrated optics, optical processing, optoelectronics, lasers, nonlinear optics, optical storage and holography, optical coherence, polarization, quantum electronics, ultrafast optical phenomena, photonic crystals, and fiber optics. Criteria used in determining acceptability of contributions include newsworthiness to a substantial part of the optics community and the effect of rapid publication on the research of others. This journal, published twice each month, is where readers look for the latest discoveries in optics.