International Symposium on Electromagnetic Compatibility
Faster Specific Absorption Rate Measurement Techniques
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This paper presented faster SAR measurement techniques based on our previously proposed estimation method, which theoretically estimates the SAR from a 2-D scanned E-field by applying the equivalence theorem and the image theory. The method reduces the SAR measurement time without sacrificing accuracy. We presented the applicability of this method and showed that the estimated results are in good agreement with the original 3-D SAR distributions. This method is also effective in evaluating a low power transmitter at a higher frequency that has a steep decay in the phantom depth. The results show the lowest output power is decreased to 4 dB. In addition, a multi-probe array and evaluation method for a multi-antenna transmitter, which can reduce the scanning time and the number of measurements, were introduced. The evaluation method can significantly reduce the number of measurements for a multi-antenna transmitter such as MIMO.