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Published on: June 8, 2018
Photonic simultaneous frequency identification of radio-frequency signals with multiple tones
Hossein Emami1, Niusha Sarkhosh, Mohsen Ashourian
1Department of Electrical Engineering, Majlesi Branch, Islamic Azad University, Isfahan, Iran. h.emami@iaumajlesi.ac.ir
Abstract:
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.
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