Reduction in SAR using RF shields made of nickel-zinc spinel ferrite at 2.4 GHz

Shielding Effectiveness of Some Conductive Textiles and Their Capability to Reduce the Mobile Phones Radiation

“…The ferrite sheet conducted to a reduction of the spatial peak SAR of 13%. Authors of [4] studied in 2008 the effect of nickel-zinc spinel ferrite shields of various shapes and sizes and concluded that a reduction factor of SAR of a maximum 52% could be obtained. In 2010 the use of resistive sheets was proposed for shielding [5], while both numerically and experimentally was demonstrated that a peak SAR reduction of over 60% was possible.…”