Remcom provides the SAM head as a CAD file which may be oriented and meshed at any desired resolution within XFdtd®. The CAD file for the SAM model, based on the original data from the IEEE Standard 1528, was generated and provided by Dr. Wolfgang Kainz from the U.S. Food and Drug Administration - Center for Devices and Radiological Health.
According to the Federal Communications Commission of the United States as stated in OET Bulletin 65, "Evaluating Compliance with FCC Guidelines for Human Exposure to Radiofrequency Electromagnetic Fields", Supplement C:
Currently, the finite-difference time-domain (FDTD) algorithm is the most widely accepted computational method for SAR modeling". Furthermore, in FCC Part 95 Section 603(f) it is stated: "Applications for equipment authorization of devices operating under this section must contain a finite difference time domain (FDTD) computational modeling report showing compliance with these provisions for fundamental emissions."
Remcom's XFdtd software is based on the FDTD method and is routinely tested for SAR calculation accuracy. Remcom offers the SAM head and Remcom biomeshes in part to aid customers in complying with FCC limits on SAR. The biomeshes are based on measured data. They and the SAM head can provide accurate estimates of SAR when used with a representative XFdtd model of the device. The accuracy of the device model can be established by comparing XFdtd calculations of radiated power to measurements. However, XFdtd and the Remcom biomeshes are not guaranteed to provide SAR calculations that will be acceptable to the FCC and are furnished without liability.