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光纤射频稳相传输技术试验研究
刘友永, 马文起, 陈少卿, 李晶
中国电子科技集团公司第54研究所, 石家庄 050081
摘要:
针对上行天线组阵技术对高稳定度射频信号的需求,提出了一种适用于上行天线组阵技术的光纤稳相传输试验方案。基于光纤延迟线的闭环稳相传输系统通过双向传输侧音信号,对光纤链路相位抖动进行监测并闭环补偿。阐述了试验原理和方法,搭建了桌面演示试验系统。试验结果表明,1 km光纤温度变化达到40 ℃时,射频信号通过该系统后相位抖动不超过1°,从而说明利用该技术可以有效补偿光纤射频传输系统的相位抖动,满足上行天线组阵技术对高稳定度射频信号的需求。
关键词:  上行组阵;光纤延迟线;闭环;稳相传输
DOI:10.15982/j.issn.2095-7777.2018.02.011
分类号:TN929.11
基金项目:
Experimental Research of Phase-Stabilized Transfer of RF Signal over Optical Fiber
LIU Youyong, MA Wenqi, CHEN Shaoqing, LI Jing
The 54 th Research Institute of CETC, Shijiazhuang 050081, China
Abstract:
A method of phase-stabilized transfer of RF signal over optical fiber is proposed in order to meet the urgent needs of high stability RF signals in uplink arrays. Phase jitter of signal transfer over optical fiber is detected and compensated by transmitting a tone signal bidirectionally in the closed loop transmission system based on optical delay line. The principal and methods of the experiment are explained in detail and an experimental system is designed. Preliminary results show that the phase jitter of the RF signal after transmission is within 1° when a temperature change of 40℃ occurs over an 1 km optical fiber. The phase jitter of the optical fiber transmission system can be compensated effectively which satisfies the needs of high stability RF signals in uplink arrays.
Key words:  uplink array;optical delay line;closed loop;phase-stabilized transfer