TY - JOUR
T1 - Design of non-dimensional parameters in stretchable microstrip antennas with coupled mechanics-electromagnetics
AU - Xu, Guizhi
AU - Yuan, Liangqing
AU - Chen, Xue
AU - Jia, Wenbo
AU - Wang, Meng Jun
AU - Yang, Li
AU - Zhu, Jia
AU - Cheng, Huanyu
N1 - Funding Information:
This work was supported in part by the National Natural Science Foundation of China under Grant 51737003, 51977060 provided to L.X. H.C. acknowledges the support provided by the National Science Foundation (NSF) (Grant No. ECCS-1933072), the Doctoral New Investigator grant from the American Chemical Society Petroleum Research Fund (59021-DNI7), the National Heart, Lung, And Blood Institute of the National Institutes of Health under Award Number R61HL154215, and Penn State University. The partial support from the Center for Biodevices, the College of Engineering, the Center for Security Research and Education, and the Commonwealth Campuses & Shared Facilities & Collaboration Development Program at Penn State is also acknowledged.
Publisher Copyright:
© 2021 The Authors
PY - 2021/7
Y1 - 2021/7
N2 - With the rapid development of flexible/stretchable electronics, wireless technology for wearable systems starts to gain momentum. Here, a class of stretchable microstrip antennas composed of serpentine mesh layouts in both the patch and ground plane is designed. The study of the representative stretchable microstrip antenna reveals the effects of the geometric parameters on its electromagnetic properties. Although the non-dimensional parameters have been shown to uniquely determine the mechanical properties of the serpentine mesh structure, their influence on the coupled mechanical-electromagnetic properties is different in the stretchable antenna. This study systematically reveals the effects of the non-dimensional parameters at various tensile strain levels from the coupled mechanics-electromagnetics simulations, with experimental validations. The mechanical stretchability of the serpentine mesh structure increases as the arc angle increases or the normalized width (i.e., the ratio of the width to radius) decreases. The normalized width together with the change in radius and width provides an effective means to tune the initial resonance frequency, impedance matching, and radiation pattern of the stretchable antenna without altering the strain sensitivity. Additionally, the advanced laser micromachining technology for the manufacturing of the stretchable microstrip antenna can also be explored to the other stretchable microwave devices.
AB - With the rapid development of flexible/stretchable electronics, wireless technology for wearable systems starts to gain momentum. Here, a class of stretchable microstrip antennas composed of serpentine mesh layouts in both the patch and ground plane is designed. The study of the representative stretchable microstrip antenna reveals the effects of the geometric parameters on its electromagnetic properties. Although the non-dimensional parameters have been shown to uniquely determine the mechanical properties of the serpentine mesh structure, their influence on the coupled mechanical-electromagnetic properties is different in the stretchable antenna. This study systematically reveals the effects of the non-dimensional parameters at various tensile strain levels from the coupled mechanics-electromagnetics simulations, with experimental validations. The mechanical stretchability of the serpentine mesh structure increases as the arc angle increases or the normalized width (i.e., the ratio of the width to radius) decreases. The normalized width together with the change in radius and width provides an effective means to tune the initial resonance frequency, impedance matching, and radiation pattern of the stretchable antenna without altering the strain sensitivity. Additionally, the advanced laser micromachining technology for the manufacturing of the stretchable microstrip antenna can also be explored to the other stretchable microwave devices.
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U2 - 10.1016/j.matdes.2021.109721
DO - 10.1016/j.matdes.2021.109721
M3 - Article
AN - SCOPUS:85105022729
SN - 0264-1275
VL - 205
JO - Materials and Design
JF - Materials and Design
M1 - 109721
ER -