Analysis of SAR Reduction of Mobile Phones in Heterogeneous Media
The mutual effect of symmetrical electric dipoles located in the near region of each other is considered. The problem is solved with due account of the space heterogeneity. The results are applied to the compensation method for losses reduction in head of phone user. The cellular phone antennas PIFA and MB are compared with each other. The SAR reduction ability combined with the compact size and high gain characteristics of the MB antenna make it a promising candidate for compact and safe cellular handset applications. It is shown that the use of linear array of additional radiators, instead of a single auxiliary radiator is an effective method for increasing the dark spot dimensions.