Simultaneous measurements of RF electric and magnetic near fields-theoretical considerations

Theoretical considerations for the design of an isotropic combined electric and magnetic radio-frequency field probe are presented. The probe is intended for simultaneous measurements of hazardous electric and magnetic fields under near-field conditions in the frequency range from 10 MHz to 300 MHz. The probe consists of six dipoles and six loops placed on all six sides of a small cube, thus providing a well defined electrical center due to the symmetry. Other significant advantages are improvement of the isotropicity, reduction of the detection errors associated with asymmetrical waveforms, and reduction of the electric field coupling to the magnetic field sensors. Theoretical findings are in agreement with the measured results of a constructed experimental probe