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西北工业大学电子信息学院,陕西西安 710072
Received:20 October 2020,
Revised:2021-01-18,
Published:25 October 2021
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史芳静,樊养余,王鑫圆等.基于相位调制器的光子射频自干扰消除系统[J].电子学报,2021,49(10):1900-1907.
SHI Fang-jing,FAN Yang-yu,WANG Xin-yuan,et al.Photonic Radio Frequency Self-Interference Cancellation System Based on Phase Modulators[J].ACTA ELECTRONICA SINICA,2021,49(10):1900-1907.
史芳静,樊养余,王鑫圆等.基于相位调制器的光子射频自干扰消除系统[J].电子学报,2021,49(10):1900-1907. DOI: 10.12263/DZXB.20201164.
SHI Fang-jing,FAN Yang-yu,WANG Xin-yuan,et al.Photonic Radio Frequency Self-Interference Cancellation System Based on Phase Modulators[J].ACTA ELECTRONICA SINICA,2021,49(10):1900-1907. DOI: 10.12263/DZXB.20201164.
针对带内全双工(In-band Full Duplex
IBFD)电子系统的收发机自干扰问题,提出了一种基于相位调制器的光子射频自干扰消除系统.利用两个相位调制器在萨格纳克(Sagnac)环中分别实现接收信号和本地参考干扰信号的调制,通过偏振控制最终可在光域中消除自干扰信号.实验结果表明,所提方案最终可以实现超过45dB的单频干扰消除和超过25dB的宽带干扰消除,系统的动态范围可达99.4dB·Hz
2/3
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To solve the problem of transceiver interference in the in-band full duplex (IBFD) system
a photonic radio frequency interference cancellation system based on phase modulators is proposed. Two phase modulators are used in a Sagnac loop to realize the modulation of the received signal and the local reference interference signal. Proper polarization control in the optical domain can finally cancel the self-interference signal. Experimental results show that the proposed scheme can achieve a single frequency interference suppression of more than 45 dB and a broadband interference suppression of more than 25 dB. The dynamic range of the system can reach 99.4 dB·Hz
2/3
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