Flexible Patch Antennas Using Patterned Metal Sheets on Silicone

Quarfoth, Ryan; Zhou, Yunshun; Sievenpiper, Daniel F.

doi:10.1109/lawp.2015.2406887

Cited by 27 publications

(10 citation statements)

References 20 publications

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“…2 b) lead to the shift of the resonance frequency to a lower value (Fig. S1), which is consistent with the previous report [ 18 , 43 ]. Though the apparent physical dimensions of the microstrip antennas with horseshoe square lattice structures are not changed from their solid counterparts, the horseshoe lattice structures increase the equivalent wavelength in the current path.…”

Section: Resultssupporting

confidence: 93%

Strain-Insensitive Hierarchically Structured Stretchable Microstrip Antennas for Robust Wireless Communication

Zhu

Zhang

et al. 2021

Nano-Micro Lett.

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As the key component of wireless data transmission and powering, stretchable antennas play an indispensable role in flexible/stretchable electronics. However, they often suffer from frequency detuning upon mechanical deformations; thus, their applications are limited to wireless sensing with wireless transmission capabilities remaining elusive. Here, a hierarchically structured stretchable microstrip antenna with meshed patterns arranged in an arched shape showcases tunable resonance frequency upon deformations with improved overall stretchability. The almost unchanged resonance frequency during deformations enables robust on-body wireless communication and RF energy harvesting, whereas the rapid changing resonance frequency with deformations allows for wireless sensing. The proposed stretchable microstrip antenna was demonstrated to communicate wirelessly with a transmitter (input power of − 3 dBm) efficiently (i.e., the receiving power higher than − 100 dBm over a distance of 100 m) on human bodies even upon 25% stretching. The flexibility in structural engineering combined with the coupled mechanical–electromagnetic simulations, provides a versatile engineering toolkit to design stretchable microstrip antennas and other potential wireless devices for stretchable electronics.

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Section: Resultssupporting

confidence: 93%

Strain-Insensitive Hierarchically Structured Stretchable Microstrip Antennas for Robust Wireless Communication

Zhu

Zhang

et al. 2021

Nano-Micro Lett.

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“…Depending on the type of application, it is vital to choose a suitable flexible material as a substrate. In last few decades, various types of flexible materials have been adopted as substrates for antennas to provide flexibility including textile or fabrics [ 44 , 155 , 156 , 157 , 158 , 159 ], paper [ 160 , 161 , 162 , 163 , 164 , 165 ] and polymers [ 3 , 7 , 8 , 10 , 14 , 15 , 26 , 28 , 29 , 39 , 55 , 57 , 58 , 59 , 61 , 62 , 63 , 73 , 77 , 78 , 79 , 80 , 81 , 85 , 86 , 104 , 139 , 148 , 149 , 166 , 167 , 168 , 169 , 170 , 171 , 172 , 173 , 174 , 175 , 176 , 177 ...…”

Section: Flexible Substrate Materials For Wearable Antennasmentioning

confidence: 99%

Bending Analysis of Polymer-Based Flexible Antennas for Wearable, General IoT Applications: A Review

et al. 2021

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Flexible substrates have become essential in order to provide increased flexibility in wearable sensors, including polymers, plastic, paper, textiles and fabrics. This study is to comprehensively summarize the bending capabilities of flexible polymer substrate for general Internet of Things (IoTs) applications. The basic premise is to investigate the flexibility and bending ability of polymer materials as well as their tendency to withstand deformation. We start by providing a chronological order of flexible materials which have been used during the last few decades. In the future, the IoT is expected to support a diverse set of technologies to enable new applications through wireless connectivity. For wearable IoTs, flexibility and bending capabilities of materials are required. This paper provides an overview of some abundantly used polymer substrates and compares their physical, electrical and mechanical properties. It also studies the bending effects on the radiation performance of antenna designs that use polymer substrates. Moreover, we explore a selection of flexible materials for flexible antennas in IoT applications, namely Polyimides (PI), Polyethylene Terephthalate (PET), Polydimethylsiloxane (PDMS), Polytetrafluoroethylene (PTFE), Rogers RT/Duroid and Liquid Crystal Polymer (LCP). The study includes a complete analysis of bending and folding effects on the radiation characteristics such as S-parameters, resonant frequency deviation and the impedance mismatch with feedline of the flexible polymer substrate microstrip antennas. These flexible polymer substrates are useful for future wearable devices and general IoT applications.

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“…To achieve some of the flexible wireless system requirements, the substrate should be chosen to achieve flexibility and mechanically robust, There are multiple flexible substrates for antenna applications including liquid crystal polymer (LCP), polydimethylsiloxane (PDMS), silicone, and many others [9]. A Kapton polyimide substrate with a dielectric constant of 3.4 and a loss tangent of 0.002 is chosen.…”

Section: Antenna Designmentioning

confidence: 99%

Design A Flexible Antenna Integrated With Artifical Magnetic Conductor

AL-Fayyadh¹,

AlSabbagh²,

Al‐Rizzo³

2017

Advanced Computational Techniques in Electromagnetics

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A flexible printed monopole antenna integrated with artificial magnetic conductor (AMC) working at 2.45 GHz is designed and analyzed. The proposed antenna is suitable for the industrial, scientific, and medical (ISM) band, WIFI and Bluetooth applications. The artificial magnetic conductor (AMC) is used to enhance the antenna characteristics and to isolate the antenna from human body effects that produces by proximity coupling. The antenna has ultra-low profile which is about 0.028 λ0. The simulated results show a good improvement in gain from 0.82 dB to 2.61 dB, efficiency from 78.56 % to 88.72% and the radiation pattern change from omni-direction to uni-direction which it suitable for wearable applications.

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Flexible Patch Antennas Using Patterned Metal Sheets on Silicone

Cited by 27 publications

References 20 publications

Strain-Insensitive Hierarchically Structured Stretchable Microstrip Antennas for Robust Wireless Communication

Strain-Insensitive Hierarchically Structured Stretchable Microstrip Antennas for Robust Wireless Communication

Bending Analysis of Polymer-Based Flexible Antennas for Wearable, General IoT Applications: A Review

Design A Flexible Antenna Integrated With Artifical Magnetic Conductor

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