A Low-Profile Ultrawideband Antenna Based on Flexible Graphite Films for On-Body Wearable Applications

被引：6

作者：

Li, Wenhua ^{[1
]}

Zu, Haoran ^{[1
]}

Liu, Jinjin ^{[1
]}

Wu, Bian ^{[1
]}

机构：

[1] Xidian Univ, Natl Key Lab Antennas & Microwave Technol, Shaanxi Joint Key Lab Graphene, Xian 710071, Peoples R China

来源：

MATERIALS | 2021年 / 14卷 / 16期

基金：

中国国家自然科学基金;

关键词：

antenna; ultrawideband; flexible graphite films (FGF); low profile; omnidirectional; wearable application; WIDE-BAND ANTENNA; BUTTON ANTENNA; DESIGN; PERFORMANCE;

D O I：

10.3390/ma14164526

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

This paper presents a low-profile ultrawideband antenna for on-body wearable applications. The proposed antenna is based on highly conductive flexible graphite films (FGF) and polyimide (PI) substrate, which exhibits good benefits such as flexibility, light weight and corrosion resistance compared with traditional materials. By introducing flaring ground and an arrow-shaped slot, better impedance matching is achieved. The wearable antenna achieves a bandwidth of 122% from 0.34 GHz to 1.4 GHz, with a reflection coefficient of less than -10 dB, while exhibiting an omnidirectional pattern in the horizontal plane. To validate the proposed design, the wearable antenna with a profile of similar to 0.1 mm was fabricated and measured. The measured results are in good agreement with simulated ones, which indicates a suitable candidate for on-body wearable devices.

引用

页数：14

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