# RFI Signal Components The RFI signal component models the complex-valued signal of each RFI source, at each antenna, over time and frequency. Therefore, this signal captures the combination of the intrinsic signal of the RFI source as well as the direction dependent effects such as the primary beam and the ionosphere. ## Fourier-domian - {class}`~tabascal.components.rfi_signal.ComplexRFIVarAnt`, {class}`~tabascal.components.rfi_signal.ComplexRFIConstAnt`