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研究了利用光纤网络实现的射频滤波技术 ,讨论了几种基本单元结构的冲击响应函数与最佳滤波条件。给出了各单元实现理想陷波的参量取值范围 ,发展并验证了为获得最佳陷波的耦合器系数损耗补偿方法。实验表明这一方法是简便有效的 ,并与理论分析符合得很好。
The radio frequency filtering technology using optical fiber network is studied. The impulse response function and the best filtering condition of several basic unit structures are discussed. The range of parameter values for realizing perfect notch of each unit is given, and the loss compensation method of coupler coefficient for obtaining the best notch is developed and verified. Experiments show that this method is simple and effective, and in good agreement with the theoretical analysis.