Antenna diagnosis and power density calculation of 5G millimeter-wave mobile terminal using inverse source technique

Millimeter-wave antennas may suffer from stronger effects of surface waves in 5G mobile terminals. In this paper, printed 28 GHz antennas are implemented in a mobile handset mock-up. The influence of surface waves is examined by the reconstructed equivalent currents obtained through the inverse source technique. The obtained equivalent currents are reused for the power density calculation for the purpose of millimeter-wave exposure assessment. The results provide valuable insight into 5G millimeter-wave mobile antenna design and measurement.