The Effect of Proximity Sensor & Grip Sensor Use on Specific Absorption Rate (SAR) in Smartphones DOI Open Access
Emirhan Aydin

Gazi University Journal of Science Part A Engineering and Innovation, Journal Year: 2025, Volume and Issue: 12(1), P. 292 - 306

Published: March 26, 2025

Today, with the contribution of new generation communication technologies, many smart devices are produced. Almost every electronic device, including phones, watches, wireless headphones, tablets, emits some form radiation. While most this electromagnetic radiation is harmless, it can have potential health effects, depending on frequency use over long periods time and in close usage. Specific Absorption Rate a measure how much human body tissue absorbs energy when exposed to This measurement helps determine whether device safe for regular use. The SAR value may vary antenna schematic design smartphone. To support high band requirements 5G smartphones, more RF antennas required be added PCB design. When designing designers also need proximity-grip sensors that accurately meet industry's (SAR) requirements. In study, effects proximity grip used smartphones LTE NR values investigated. During these measurements, combination Grip Proximity Sensors were alternately turned off. Although sensor not mainly optimize values, foreseen they indirect SAR. context, measurements made 3D environment different frequencies. As result was observed grip-proximity significantly reduce transfer less users range effect using rate measured approximately 8%, while Sensor 10%.

Language: Английский

Dual-Function Radar Communications: A Secure Optimization Approach Using Partial Group Successive Interference Cancellation DOI Creative Commons
Mengqiu Chai, Shengjie Zhao, Yuan Liu

et al.

Remote Sensing, Journal Year: 2025, Volume and Issue: 17(3), P. 364 - 364

Published: Jan. 22, 2025

As one of the promising technologies 6G, dual-function radar communication (DFRC) integrates and sensing networks. However, with application deployment DFRC, its security problem has become a significantly important issue. In this paper, we consider physical layer DFRC system where base station communicates multiple legitimate users simultaneously detects target interest. The is also potential eavesdropper wiretapping secure transmission. To end, proposed design based on partial group successive interference cancellation through fully leveraging split messages partially decoding to improve rate increment users. order maximize echo signal-to-noise ratio (SNR), formulate an optimization beamforming introducing new variables relaxing solve non-convexity problem. Then, propose joint algorithm Simulation results demonstrate effectiveness our in improving secrecy performance considered system.

Language: Английский

Citations

0
The Effect of Proximity Sensor & Grip Sensor Use on Specific Absorption Rate (SAR) in Smartphones DOI Open Access
Emirhan Aydin

Gazi University Journal of Science Part A Engineering and Innovation, Journal Year: 2025, Volume and Issue: 12(1), P. 292 - 306

Published: March 26, 2025

Today, with the contribution of new generation communication technologies, many smart devices are produced. Almost every electronic device, including phones, watches, wireless headphones, tablets, emits some form radiation. While most this electromagnetic radiation is harmless, it can have potential health effects, depending on frequency use over long periods time and in close usage. Specific Absorption Rate a measure how much human body tissue absorbs energy when exposed to This measurement helps determine whether device safe for regular use. The SAR value may vary antenna schematic design smartphone. To support high band requirements 5G smartphones, more RF antennas required be added PCB design. When designing designers also need proximity-grip sensors that accurately meet industry's (SAR) requirements. In study, effects proximity grip used smartphones LTE NR values investigated. During these measurements, combination Grip Proximity Sensors were alternately turned off. Although sensor not mainly optimize values, foreseen they indirect SAR. context, measurements made 3D environment different frequencies. As result was observed grip-proximity significantly reduce transfer less users range effect using rate measured approximately 8%, while Sensor 10%.

Language: Английский

Citations

0