The purpose of this paper is to calculate the specific absorption rate (SAR) reduction in muscle cube with metamaterial attachment. The finitedifference time-domain (FDTD) method has been used to evaluate the SAR in a realistic anatomically based model of the muscle cube. We design the single negative metamaterials from periodic arrangement of split ring resonators (SRRS). By properly designing structural parameter of SRRS, the effective medium parameter can be trade negative at 900 MHz and 1800 MHz band in this paper. Numerical results of SAR values in muscle cube with presence of resonators exhibit SAR reduction. These results can provide useful information in designing safety mobile communication equipment compliance. Zmanjšanje SAR v modelu mišične kocke z dodatkom metamateriala Kjučne besede: SAR, zmanjšanje SAR, mišična kocka, dodatek metamateriala, mobilne komunikacijske naprave Izvleček: Namen članka je izračunati zmanjšanje specifične stopnje absorpcije (SAR) v mišični kocki z dodatkom metamateriala. Za ocenjevanje SAR v realnem anatomskem modelu mišične kocke je bila uporabljena FDTD ( finite-difference time-domain ) metoda. Model metamaterialov smo izdelali s pomočjo periodične structure resonatorjev tipa SRRS ( SRRS – split-ring resonator ) Z ustrezno izbiro strukturnih parametrov SRRS lahko dosežemo negativno prepustnost pri frekvencah 900 MHz in 1800 MHz. Numerični rezultati SAR vrednosti v mišični kocki ob prisotnosti resonatorjev SRRS kažejo na zmanjšanje SAR. Rezultati so tako uporaben vir informacij pri načrtovanju varnih mobilnih komunikacijskih naprav.
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