Upper Bound Study of 5G RF EMF Exposure

Power density emitted by 5G user equipment should not exceed the power density limits set by compliance guidelines. When the amplitude of each port of millimeter-wave array antennas is uniform, the power density maximization problem can be relaxed to a semi-definite program. In this paper, the effect of sampling widths is considered for the maximum power density calculation. The results show that when the sampling distance is less than a half wavelength, the sampling rate should be higher than the Nyquist rate.