A Comprehensive Analysis of Low-Profile Dual Band Flexible Omnidirectional Wearable Antenna for WBAN Applications

被引:6
作者
Khan, Muhammad Afzaal [1 ]
Sethi, Waleed Tariq [1 ]
Malik, Waqar Ahmad [2 ]
Jabbar, Abdul [3 ]
Khalid, Muhammad Ali [4 ]
Almuhlafi, Ali M. [5 ]
Himdi, Mohamed [6 ]
机构
[1] Ghulam Ishaq Khan Inst Engn Sci & Technol, Fac Elect Engn, Swabi 23640, Khyber Pakhtunk, Pakistan
[2] Natl Univ Sci & Technol NUST, Coll Aeronaut Engn CAE, Dept Av Engn, Risalpur 24090, Khyber Pakhtunk, Pakistan
[3] Informat Technol Univ ITU, Elect Engn Dept, Lahore 54600, Pakistan
[4] Natl Univ Sci & Technol NUST, Sch Elect Engn & Comp Sci SEECS, Islamabad 44000, Pakistan
[5] King Saud Univ, Coll Engn, Elect Engn Dept, Riyadh 11421, Saudi Arabia
[6] Univ Rennes, Inst Elect & Technol numeR IETR, F-35042 Rennes, France
关键词
Dual band; microstrip patch antenna; omnidirectional antenna; SAR; WBAN; COMPACT; TEXTILE; PDMS;
D O I
10.1109/ACCESS.2024.3380908
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
This manuscript demonstrates a comprehensive analysis of a low-profile dual-band flexible omnidirectional wearable antenna, designed for Wireless Body Area Network (WBAN) applications. The proposed antenna is designed and fabricated on a commercially available semiflexible RT/duroid 5870 sub-strate. The antenna prototype is composed of a circular radiating patch with a star-shaped slot at the center, providing dual-band operations that resonates at the 2.45 GHz ISM band and 5.2 GHz WLAN band. Meanwhile, two truncated arc-shaped slots at the top and bottom edges of the radiating patch and the partial ground were utilized to improve the reflection coefficients (S11) and impedance bandwidth of the antenna. The proposed antenna has a compact footprint of 47x30x0.787 mm(3)(0.38 lambda ox0.25 lambda ox0.006 lambda o at2.45 GHz), with measured impedance bandwidth of 48% and 38.5% at 2.45 GHz and 5.2 GHz respectively. Moreover, the designed antenna has an omnidirectional and bidirectional radiation feature with the estimated gain of 2.5 dBi, 4.63 dBi and numerical efficiencies of 98.5% and 95% at 2.45 GHz and 5.2 GHz respectively. Furthermore, a comprehensive investigation encompassing a specific absorption rate and an exploration of bending aspects validated the effectiveness of the suggested design in adhering the SAR threshold and its remarkable robustness, when confronted with the demands imposed by human body loading and structural deformations. Consequently, both the numerical and measured results strongly endorse the significance of the suggested design for lightweight, body-worn wearable devices within the Wireless Body Area Network applications.
引用
收藏
页码:45187 / 45201
页数:15
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