Summary
International Conference on Emerging Technologies for Communications
2023
Session Number:P2
Session:
Number:P2-33
A Measurement for the SAR Probe Gain Response against TDD Modulated Signal for Probe Calibration at the frequency of 3.7 GHz
Yuto Shimizu, Tomoaki Nagaoka,
pp.-
Publication Date:2023/11/29
Online ISSN:2188-5079
Summary:
In a human exposure assessment of wireless communication devices, specific absorption rate (SAR) is used as a safety criterion at the frequency from 100 kHz to 6 GHz. The conformity assessment based on the SAR is performed according to the standard. The SAR probe calibration is important for the conformity assessment. Typically, the SAR probe is calibrated by CW signal. On the other hand, since the SAR probe detects the modulated signal in the actual measurement, the probe calibration for the modulated signal has been proposed to improve the measurement accuracy. The calibration for 4G signal was considered, but not 5G signal. In this study, the SAR probe gain response for TDD modulated signal used in 5G was measured at the frequency of 3.7 GHz for the basic study for the probe calibration. This result showed the applicability of TD-LTE signal calibration to 5G TDD signal and importance of classifying the signal as burst or random to calibrate the probe for the 5G TDD signal.