Wearable high gain low SAR antenna loaded with backed all-textile EBG for WBAN applications
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Date
07/01/2020
Journal Title
Journal ISSN
Volume Title
Type
Article
Publisher
Institution of Engineering and Technology
Series Info
IET Microwaves, Antennas and Propagation;Volume 14, Issue 8, 1 July 2020, Pages 791-799
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Abstract
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A high gain, low specific absorption rate, oval-shaped monopole antenna is presented. It is backed by an all-textile 3 × 3 array of electromagnetic bandgap (EBG) unit cells. The antenna is printed on the thin Rogers ULTRALAM 3850 substrate, while the EBG array is composed of the conductive ShieledIT Super and dielectric substrate felt. The design operates at 2.45 GHz of the Industrial, Scientific, and Medical band. Due to the close distance between the extended grounds of the co-planar waveguide feeding configuration and the oval-shaped monopole antenna, current-coupling was achieved, leading to gain enhancement. However, with body-loading cases, resonance at 2.45 GHz was attained at a separation of 30 mm. By incorporating the EBG array, as an isolator, this issue was resolved. In free space and over a gap of 3 mm from the human body, gain enhancements by 2.68 and 11.54 dB were achieved at 2.45 GHz, respectively. Simulated and measured results are benchmarked. Furthermore, SAR simulation study showed reductions by 99.5%, averaged over 1 and 10 g of tissue. © The Institution of Engineering and Technology 2020
Description
MSA GOOGLE SCHOLAR
Keywords
October University for Wearable antennas, Antenna arrays, Dielectric materials, Microstrip antennas, Microwave antennas, Monopole antennas, Textiles, Wireless local area networks (WLAN), Dielectric substrates, Electromagnetic band gaps, Free spaces
Citation
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