A near-end machine of an optical fiber repeater and networking system

CN224697754UActive Publication Date: 2026-08-28CHINA RAILWAY XIAN GRP CO LTD +1
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Patent Information

Application Number
CN202521500765.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-07-17
Publication Date
2026-08-28
Estimated Expiration
2035-07-17

AI Technical Summary

Technical Problem

[0004]本实用新型的目的在于提供一种光纤直放站的近端机及组网系统,以解决现有技术中近端机只能单一支持400MHz或者450MHz频段信号的问题

Benefits of technology

通过列调信号处理模块的优化设计,特别是光电转换单元中设置多个独立光模组,配合信号检测与双工处理单元,利用上行单元和下行单元用于四路远端机信号的放大合成和分离,使400MHz车站电台和450MHz车站电台信号通过近端机传输给远端机,同时使多个远端机的信号通过近端机传输给400MHz车站电台和450MHz车站电台,完成区间信号覆盖。克服了现有设备仅能支持单一频段的局限,有效保障了在铁路无线列调系统从450MHz模拟制式向400MHz数字制式过渡期间,沿线弱场区域通信业务的连续覆盖和可靠运行,避免了因频段转换导致的通信中断风险,显著提升了系统改造的平滑性和可用性。

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Abstract

The utility model relates to communication equipment technical field, concretely relates to a near end machine and networking system of optical fiber repeater. Near end machine includes the body, the list modulation signal processing module, master control module integrated on the body, and the list modulation signal processing module includes signal detection unit, duplex processing unit, upstream unit, downstream unit and photoelectric conversion unit, and signal detection unit, duplex processing unit, upstream unit and photoelectric conversion unit are electrically connected in proper order, and signal detection unit, duplex processing unit, downstream unit and photoelectric conversion unit are electrically connected in proper order, and upstream unit and downstream unit all include independent analog radio frequency module group and digital radio frequency module group. The utility model can effectively compatible processing 400MHz digital wireless list modulation and 450MHz analog wireless list modulation's signal simultaneously, provides full transparent transmission, realizes new standard digital list modulation frequency point and traditional analog list modulation frequency point same heterodyne frequency double -work simultaneously.
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