Photonic simultaneous frequency identification of radio-frequency signals with multiple tones.
Photonic simultaneous frequency identification of radio-frequency signals with multiple tones.
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DOI：
10.1364/ao.52.005508
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发表时间：
2013-08
期刊：
影响因子：
1.9
通讯作者：
H. Emami;N. Sarkhosh;M. Ashourian
中科院分区：
文献类型：
--
作者：
H. Emami;N. Sarkhosh;M. Ashourian
提出了一种利用光子学方法对多频微波信号进行瞬时频率成分识别的设想，并进行了实验验证。首先开发了一个数学模型来预测系统的行为。并在实践中对系统进行了运行测试。该系统采用双混频技术，无需任何高频RF组件或宽带光电探测器即可实现高频测量。该系统的工作频率范围为0.1-40 GHz。演示了两个同时RF音调的频率测量;但是，该系统有可能扩展以测量更多数量的同时RF音调。它还具有在更宽的频率范围内工作的潜力。
A photonic approach to instantaneously identify frequency components of microwave signals with multiple tones is conceived and practically demonstrated. A mathematical model was first developed to predict the behavior of the system. Then the system operation was tested in practice. The system employs a double mixing technique that enables high-frequency measurement without the need for any high-frequency RF component or broadband photodetector. The system operation was demonstrated over a frequency range of 0.1-40 GHz. Frequency measurement of two simultaneous RF tones is demonstrated; however, the system has the potential to be expanded to measure a larger number of simultaneous RF tones. It also has the potential to operate over a wider frequency range.