An antenna calibration method comprising: covering all interfering elements which are present during calibration ratio acquisition but absent during operation, with RF radiation absorbing materials; injecting an internal calibration signal into antennae and using an RF source in the near field zone of the antenna to inject an external calibration signal into the antennae; measuring the amplitude and phase of the internal and external calibration as received and using an electro-magnetically coupled structure-accommodating calibration ratio computer to process the internal and external calibration signals; using an RF simulation tool to create the same near field zone configuration set-up as was used for measuring the amplitude and phase of the external calibration signal as received; using an RF simulation tool to create a far-field zone configuration setup fulfilling far-field conditions for each element of an interfering structure; computing (280, 290) induced currents on the interfering structure for the near and far-field zone configurations, for each element of the interfering structure; computing electromagnetic fields resulting from near-field zone configuration induced currents for each of said elements of the interfering structure; computing electromagnetic fields resulting from far-field zone configuration induced currents for each of said elements of the interfering structure; computing total fields for far field zone configuration and, by summing all induced fields, over all of said elements of the interfering structure, and the fields from the RF source, for near field zone configuration; sampling total fields at the spatial position of each antenna element in said antennae for near-field zone configuration and for far-field zone configuration; computing a correction factor as ratio of total fields computed at near and far-field zone configurations, sampled at spatial position of each antenna element in said antennae; computing (370, 380) phase and amplitude, respectively, of the calibration ratio for each antenna element in said antennae by subtracting measured values of the internal calibration signal from measured values of the external calibration signal adding phase and amplitude, respectively, of the correction factor; and calibrating the antenna using the phase and amplitude of the calibration ratio. covering all interfering elements which are present during calibration ratio acquisition but absent during operation, with RF radiation absorbing materials; injecting an internal calibration signal into antennae and using an RF source in the near field zone of the antenna to inject an external calibration signal into the antennae; measuring the amplitude and phase of the internal and external calibration as received and using an electro-magnetically coupled structure-accommodating calibration ratio computer to process the internal and external calibration signals; using an RF simulation tool to create the same near field zone configuration set-up as was used for measuring the amplitude and phase of the external calibration signal as received; using an RF simulation tool to create a far-field zone configuration setup fulfilling far-field conditions for each element of an interfering structure; computing (280, 290) induced currents on the interfering structure for the near and far-field zone configurations, for each element of the interfering structure; computing electromagnetic fields resulting from near-field zone configuration induced currents for each of said elements of the interfering structure; computing electromagnetic fields resulting from far-field zone configuration induced currents for each of said elements of the interfering structure; computing total fields for far field zone configuration and, by summing all induced fields, over all of said elements of the interfering structure, and the fields from the RF source, for near field zone configuration; sampling total fields at the spatial position of each antenna element in said antennae for near-field zone configuration and for far-field zone configuration; computing a correction factor as ratio of total fields computed at near and far-field zone configurations, sampled at spatial position of each antenna element in said antennae; computing (370, 380) phase and amplitude, respectively, of the calibration ratio for each antenna element in said antennae by subtracting measured values of the internal calibration signal from measured values of the external calibration signal adding phase and amplitude, respectively, of the correction factor; and calibrating the antenna using the phase and amplitude of the calibration ratio.