title: Photonic simultaneous frequency identification of radio-frequency signals with multiple tones.
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.
authors.affiliation: Department of Electrical Engineering, Majlesi Branch, Islamic Azad University, Isfahan, Iran. h.emami@iaumajlesi.ac.ir
authors.forename: Hossein
authors.initials: H
authors.lastname: Emami
authors.forename: Niusha
authors.initials: N
authors.lastname: Sarkhosh
authors.forename: Mohsen
authors.initials: M
authors.lastname: Ashourian