Evaluation of electromagnetic interference to implanted cardiac pacemaker due to mobile phone

In recent years, electromagnetic interference (EMI) on implanted cardiac pacemakers due to mobile phones has become a large concern. Here, in the previous studies, dipole antenna or monopole antenna loaded to a metallic case which simulates the PCB, battery etc. were mainly employed as a mobile phone model. However, recent mobile phones are generally equipped with an embedded antenna such as planar inverted-F antenna (PIFA) which have different characteristics from linear antenna. In this study, a realistic mobile phone model consists of 0.1×0.1×0.1 mm³ voxel was employed for calculation of the interference voltage induced at the pacemaker, in order to evaluate the characteristics of the EMI due to mobile phones with existing communication systems. It is consequently shown that the realistic mobile phone model has different characteristics of the interference voltage from those of the simple mobile phone model such as half-wavelength dipole antenna.