Fully Fabric High Impedance Surface-Enabled Antenna for Wearable Medical Applications

被引：33

作者：

Ashyap, Adel Y. I. ^{[1
]}

Dahlan, Samsul Haimi Bin ^{[1
]}

Abidin, Zuhairiah Zainal ^{[2
]}

Rahim, Sharul Kamal Abdul ^{[3
]}

Majid, Huda A. ^{[1
]}

Alqadami, Abdulrahman S. M. ^{[4
]}

Atrash, Mohamed El ^{[5
]}

机构：

[1] Univ Tun Hussein Onn Malaysia UTHM, Fac Elect & Elect Engn, Ctr Appl Electromagnet EMCtr, Batu Pahat 86400, Malaysia

[2] Univ Tun Hussein Onn Malaysia UTHM, Fac Elect & Elect Engn, Adv Telecommun Res Ctr ATRC, Batu Pahat 86400, Malaysia

[3] Univ Teknol Malaysia UTM, Fac Engn, Wireless Commun Ctr WCC, Skudai 81310, Malaysia

[4] Univ Queensland, Sch Informat Technol & Elect Engn ITEE, Brisbane, Qld 4072, Australia

[5] October Univ Modern Sci & Arts, Dept Elect Commun & Elect Syst Engn ECE, Cairo 12451, Egypt

来源：

IEEE ACCESS | 2021年 / 9卷

关键词：

Antennas; Resonant frequency; Microstrip antennas; Wireless communication; Biomedical monitoring; Surface impedance; Licenses; HIS; AMC; EBG; warble antenna; SAR;

D O I：

10.1109/ACCESS.2021.3049491

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

The compact and robust high-impedance surface (HIS) integrated with the antenna is designed to operate at a frequency of 2.45 GHz for wearable applications. They are made of highly flexible fabric material. The overall size is 45 x 45 x 2.4 mm(3) which equivalent to 0.37 lambda o x 0.37 lambda o x 0.02 mm(3). The value of using HIS lies in protecting the human body from harmful radiation and maintaining the performance of the antenna, which may be affected by the high conductivity of the human body. Besides, setting the antenna on the human body by itself detunes the frequency, but by adding HIS, it becomes robust and efficient for body loading and deformation. Integrated antenna with HIS demonstrates excellent performance, such as a gain of 7.47 dBi, efficiency of 71.8% and FBR of 10.8 dB. It also reduces the SAR below safety limits. The reduction is more than 95%. Therefore, the presented design was considered suitable for wearable applications. Further study was also performed to show the useful of placing antenna over HIS compared to the use of perfect electric conductor (PEC). The integrated design was also investigated with the worst case of varying the permittivity of body equivalent model which shows excellent performance in term of reflection coefficient and SAR levels. Hence, the integrated antenna with HIS is mechanically robust to human body tissue loading, and it is highly appropriate for body-worn applications.

引用

页码：6948 / 6960

页数：13