A Dual-band Flexible Wearable Antenna Loaded with an Artificial Magnetic Conductor

WANG Lili; LI Junjun; ZHANG Shiyu; FAN Panpan

doi:10.11999/JEIT231428

Volume 46 Issue 9

Sep. 2024

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Article Navigation > Journal of Electronics & Information Technology > 2024 > 46(9): 3637-3645

WANG Lili, LI Junjun, ZHANG Shiyu, FAN Panpan. A Dual-band Flexible Wearable Antenna Loaded with an Artificial Magnetic Conductor[J]. Journal of Electronics & Information Technology, 2024, 46(9): 3637-3645. doi: 10.11999/JEIT231428

Citation:

WANG Lili, LI Junjun, ZHANG Shiyu, FAN Panpan. A Dual-band Flexible Wearable Antenna Loaded with an Artificial Magnetic Conductor[J]. Journal of Electronics & Information Technology, 2024, 46(9): 3637-3645. doi: 10.11999/JEIT231428

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A Dual-band Flexible Wearable Antenna Loaded with an Artificial Magnetic Conductor

doi: 10.11999/JEIT231428

WANG Lili^{1, 2},
LI Junjun^{1
,
,},
ZHANG Shiyu¹,
FAN Panpan¹

1.
College of Automation and Information Engineering, Xi’an University of Technology, Xi’an 710048, China
2.
Xi’an Key Laboratory of Wireless Optical Communication and Network Research, Xi’an 710048, China

Received Date: 2023-12-27
Rev Recd Date: 2024-07-18

Available Online: 2024-08-03

Publish Date: 2024-09-26

Abstract

Abstract

A dual-band flexible wearable antenna integrated with an Artificial Magnetic Conductor(AMC) is presented. The design operates at 3.5 GHz and 5.8 GHz. The proposed antenna is composed of a dual-band monopole antenna and a dual-band artificial magnetic conductor with a 4×4 array, both of which are printed on flexible materials. The antenna dimensions are 0.70$ {\lambda _0} $×0.70$ {\lambda _0} $×0.05$ {\lambda _0} $($ {\lambda _0} $ is the free space wavelength at 3.5 GHz). The substrate of the artificial magnetic conductor is based on a three-layer structure, which enhances the phase response. The double-ring slotted structure is used to extend the current path length, achieving dual-band broadband in-phase reflection. Introducing an artificial magnetic conductor effectively reduces the back radiation of the antenna, thereby decreasing the Specific Absorption Rate(SAR) and simultaneously increasing the antenna’s gain. Simulation results show that the performance of the antenna is less affected by structural deformation and human body load. The impedance bandwidths of the antennas in the operating frequency range are 7.5% and 4.0%, and the peak gains are 7.86 dBi and 8.06 dBi. The specific absorption rates at 3.5 GHz and 5.8 GHz are 0.2 W/kg and 0.06 W/kg, respectively. Both values are well below the FCC SAR limits. The antenna was processed and tested to validate the modeling results. The experimental results show that the antenna, loaded with an artificial magnetic conductor, exhibits a low specific absorption rate, strong robustness, and high gain, rendering it suitable for wearable wireless communication systems.
- Wearable antenna,
- Dual-band Artificial Magnetic Conductor(AMC),
- Specific Absorption Rate(SAR),
- Robustness

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References(19)

References

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