Abstract
A dual-band wearable antenna is designed on a textile material. The design operates at ISM bands available for Wireless Body Area Network and Wireless Local Area Network with an input match better than -15 dB. The antenna is designed by using Computational Electromagnetic Software (CEMS) based on finite-difference time-domain (FDTD) method. A three-layer phantom model including skin, fat and muscle has been considered to compute the specific absorption rate (SAR). The maximum value of SAR averaged over 1g and 10g of tissue is less than 1.6 W/Kg and 2 W/Kg, respectively, when the maximum incident power of the antenna is 63 mW. These values are incompliance with the international electromagnetic safety standards.
Highlights
INTRODUCTIONTHE ADVANCEMENT of wireless networks and Complementary Metal Oxide Semiconductor (CMOS) low power integrated circuit technology introduced the usage of wireless sensor nodes in many applications ranging from comfort enhancing consumer products to therapeutic medical devices
THE ADVANCEMENT of wireless networks and Complementary Metal Oxide Semiconductor (CMOS) low power integrated circuit technology introduced the usage of wireless sensor nodes in many applications ranging from comfort enhancing consumer products to therapeutic medical devices.https://orcid.org/0000-0002-5881-1557https://orcid.org/0000-0002-2306-6008https://orcid.org/0000-0002-7527-3850https://orcid.org/0000-0001-5349-5930Manuscript received December 29, 2020; accepted May 25, 2021
Numerical results show that the performance of the antenna is affected by the presence of the phantom and maximum SAR distributions over 1g (SAR1g) and SAR10g values for the tissues are less than the internationally accepted standards of 1.6 W/kg set by Federal Communications Commission (FCC) in the United States [13] and 2 W/kg set by CENELEC in the EU [14], respectively
Summary
THE ADVANCEMENT of wireless networks and Complementary Metal Oxide Semiconductor (CMOS) low power integrated circuit technology introduced the usage of wireless sensor nodes in many applications ranging from comfort enhancing consumer products to therapeutic medical devices. The allocation of only 300 kHz bandwidth allowed the maximum achievable data rate up to around 450 kbit/s for the MICS applications [4] This greatly reduce use cases as many modern wireless links involve the fusion of many sensor nodes requiring much higher data rates and smaller device sizes. The sensors and electronics differ depending on the applications, these devices all utilize some sort of antennas for wireless communications. Numerical results show that the performance of the antenna is affected by the presence of the phantom and maximum SAR1g and SAR10g values for the tissues are less than the internationally accepted standards of 1.6 W/kg set by FCC in the United States [13] and 2 W/kg set by CENELEC in the EU [14], respectively
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