A novel photonic-enabled high frequency broadband RF canceller for in-band full-duplex wireless communication system or frequency modulated continuous-wave (FMCW) radars is proposed. The phase and amplitude between reference and interference signal is matched by optical spectrum processing, and the delay time is aligned by using the dispersive element and finely tuning the wavelength of the tunable lasers. The experiment is performed. RF selfinterference cancellation with the bandwidth up to 6GHz is experimentally demonstrated with the cancellation depth of more than 26.9dB in K band.
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