An up/downstream shared optical beam forming network based on wavelength-swept for remote phased array antenna is presented and experimentally demonstrated. A shared optical true time delay (TTD) network minimizes the size and cost, which is made by 16 paths of variable lengths of dispersion compensation fibers splicing with single-mode fiber, and then corporate with optical circulators. The experimental results show that the proposed system provides wide bandwidth from 12 GHz to 17GHz. The main lobe is oriented from −49.3° to 45.9° and the spurious free dynamic range (SFDR) of 104.58 dB·Hz ^2/3 is achieved in this system. Besides, the optical beam forming network is not affected by external temperature interference. This structure could have applications in remote phased array antenna.

中文翻译：

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远程相控阵天线的上/下游共享波束形成网络

提出并通过实验证明了基于波长扫掠的上/下游共享相控阵波束形成网络。共享的光学真实时间延迟（TTD）网络可将尺寸和成本最小化，这是通过将可变长度的色散补偿光纤的16条路径与单模光纤拼接在一起，然后与光环行器组合而成的。实验结果表明，所提出的系统提供了从12 GHz到17GHz的宽带宽。该系统的主瓣的方向是−49.3°至45.9°，并且无杂散动态范围（SFDR）为104.58 dB·Hz ^2/3。此外，光束形成网络不受外界温度干扰的影响。该结构可以在远程相控阵天线中应用。