Ultrawideband Efficient Channelized Receiver Based on Photonic-Assisted Acousto-Optic Frequency Shifters

IF 4.5 1区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Microwave Theory and Techniques Pub Date : 2025-04-08 DOI:10.1109/TMTT.2025.3553286

Weile Zhai;Donglin Zhang;Ruiqiong Wang;Yuanliang Wu;Long Liu;Xirui Zhong;Wanzhao Cui;Yongsheng Gao

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引用次数: 0

Abstract

Radio frequency (RF) channelization is a critical technology for comprehensive signal reception and detection across various domains. However, digital channelized receivers encounter significant limitations when processing broadband signals exceeding 10 GHz due to the inherent processing constraints. Existing photonic-assisted channelized receivers are limited by inefficient optical frequency comb (OFC) utilization, where the channel count is confined to the number of comb lines and challenged by complex OFC generation and intrachannel crosstalk. In this work, an ultrawideband and high-efficiency RF signal channelization scheme based on a single OFC and acousto-optic frequency shifter (AOFS) is proposed and demonstrated. The RF channelization across 33 channels over the 0–33-GHz frequency range is experimentally validated using a single phase modulator (PM) for OFC generation, which significantly improves the OFC utilization and simplifies the system structure. In addition, the comparison of OFC utilization, the digital domain image suppression algorithm, and the channel number expansion in the proposed scheme is discussed. The innovative channelized receiver holds substantial promise for advanced applications in spectrum monitoring, electronic warfare, modern communications, and high-resolution radar systems.

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基于光子辅助声光移频器的超宽带高效信道化接收机

射频（RF）信道化是一项跨领域综合信号接收和检测的关键技术。然而，由于固有的处理约束，数字信道化接收机在处理超过10ghz的宽带信号时会遇到明显的限制。现有的光子辅助信道化接收机受到光频梳（OFC）利用率低的限制，其中信道数量仅限于梳线的数量，并且受到复杂的OFC产生和信道内串扰的挑战。本文提出并演示了一种基于单OFC和声光移频器（AOFS）的超宽带高效射频信号信道化方案。通过实验验证了在0 - 33 ghz频率范围内使用单相调制器（PM）产生OFC的33个信道的射频信道化，显著提高了OFC利用率，简化了系统结构。此外，还对该方案的OFC利用率、数字域图像抑制算法和信道数扩展进行了比较。这种创新的信道化接收机在频谱监测、电子战、现代通信和高分辨率雷达系统的先进应用中具有巨大的前景。

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

IEEE Transactions on Microwave Theory and Techniques 工程技术-工程：电子与电气

CiteScore

8.60

自引率

18.60%

发文量

486

审稿时长

6 months

期刊介绍： The IEEE Transactions on Microwave Theory and Techniques focuses on that part of engineering and theory associated with microwave/millimeter-wave components, devices, circuits, and systems involving the generation, modulation, demodulation, control, transmission, and detection of microwave signals. This includes scientific, technical, and industrial, activities. Microwave theory and techniques relates to electromagnetic waves usually in the frequency region between a few MHz and a THz; other spectral regions and wave types are included within the scope of the Society whenever basic microwave theory and techniques can yield useful results. Generally, this occurs in the theory of wave propagation in structures with dimensions comparable to a wavelength, and in the related techniques for analysis and design.