论文部分内容阅读
针对现有电环形器带宽隔离度有限的技术瓶颈,基于微波光子技术,通过光路射频对消方法,得到了频率2 GHz~8 GHz,隔离度>35 d B的射频收发系统。相比传统电环形器,在多倍频程范围内将收发隔离度提升了近15 d B。文中详细论述了方案原理及实验结果,该成果可为同频率共天线射频同时收发系统提供新的解决方案。在连续波雷达性能提升、通信频谱资源扩展等领域具备重要应用价值。
Aiming at the technical bottleneck of the limited bandwidth of the electrical circulator, based on the microwave photonic technology, the RF transceiver system with the frequency of 2 GHz ~ 8 GHz and the isolation of> 35 d B is obtained by the optical RF cancellation method. Compared with the traditional electric circulator, in the multi-octave range will send and receive isolation increased nearly 15 d. The principle of the scheme and the experimental results are discussed in detail in the paper. The result can provide a new solution for the RF simultaneous sending and receiving system with the same frequency. It has important application value in the areas of continuous wave radar performance improvement and communication spectrum resource extension.