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Proceedings Article

Dual-band WiFi and 4G LTE textile antenna

TL;DR: The obtained bandwidth and radiation characteristics make the double G antenna proper to be used for WiFi and 4G LTE applications in the 2.4GHz to 2.7GHz band and 5.1GHz to 5.875GHz band.
Abstract: In this paper, a “double G” textile CPW-fed monopole antenna design for dual-band WLAN applications is proposed. Return loss, realized gain and radiation patterns measurements are used to characterize a manufactured prototype. The obtained bandwidth and radiation characteristics make the double G antenna proper to be used for WiFi and 4G LTE applications in the 2.4GHz to 2.7GHz band and 5.1GHz to 5.875GHz band. Moreover, effects on the return loss for the novel design antenna under bent conditions are further discussed.
Citations
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Journal ArticleDOI
TL;DR: In this paper, a dual-band wearable textile antenna based on substrate integrated waveguide technology is presented for operation in the [2.4-2.4835]-GHz Industrial, Scientific and Medical band and the [ 2.5-1.69]-GHz 4G LTE band 7.
Abstract: A dual-band wearable textile antenna based on substrate integrated waveguide technology is presented for operation in the [2.4-2.4835]-GHz Industrial, Scientific and Medical band and the [2.5-2.69]-GHz 4G LTE band 7. The antenna features an integrated flexible solar harvesting system, consisting of a flexible solar cell, a power management system, and energy storage. All these components are judiciously positioned on the antenna platform in order not to affect its radiation performance. The measured reflection coefficients and radiation characteristics after bending and deploying the antenna on a human body prove that the antenna is well suited for on-body use. A measured on-body antenna gain and radiation efficiency of 5.0 dBi and 89% are realized. Measurements in a real-life situation have demonstrated the ability to scavenge a maximum of 53 mW by means of a single integrated flexible solar cell.

81 citations


Cites background from "Dual-band WiFi and 4G LTE textile a..."

  • ...Reference [7] presents a dual-band WiFi and 4G LTE textile antenna operating in the [2....

    [...]

Journal ArticleDOI
TL;DR: In this article, a broadband and a dual-band printed slot antennas for future millimeter wave mobile network communication are proposed for the Ka-band frequency of operation, where the basic antenna design consists of a circular radiating patch that is placed non-concentrically inside a circular slot etched off the ground plane.
Abstract: In this paper, a broadband and a dual-band printed slot antennas for the future millimeter wave mobile network communication are proposed. The antennas are designed for Ka -band frequency of operation. The basic antenna design consists of a circular radiating patch that is placed non-concentrically inside a circular slot etched off the ground plane. Matching between a radiating patch and the 50 Ω microstrip line is manipulated through a proximity-feed technique. The simulated antenna prototype – I and prototype – II are fabricated and successfully measured. The results indicate that the proposed antenna prototype – I yields the broadband impedance bandwidth >20 GHz (from 20 to >40 GHz) define by S 11

40 citations

Journal ArticleDOI
TL;DR: In this article, a dual-band antenna with 2.18 to 2.50 GHz and 5.22 to 5.72 GHz bands of operation was tested for the effect of bending by placing it over curvilinear surfaces.
Abstract: This study brings out the design, fabrication and performance evaluation of a compact, dual band antenna on paper substrate. The two bands of operations are 2.18 to 2.50 and 5.22 to 5.72 GHz. These bands are used by the wireless sensor networks (WSNs) and radio frequency identification systems (RFID). The antenna becomes useful for the WSN nodes and RFID systems at these frequencies. The overall size of the antenna is 40 mm × 20 mm × 0.6 mm, which makes it a compact one. Antenna was tested for the effect of bending by placing it over curvilinear surfaces. The bending was done in horizontal (X) and vertical (Y) axes. These examinations will help to understand the effect of wind loading and other packaging related bending on antenna performance. The main features of this antenna are stability in performance under bent conditions, simple configuration and low cost of fabrication. A thin polyethylene layer has been used to laminate the antenna for permanence. The effect of lamination has also been explained in the course of the study.

13 citations

Journal ArticleDOI
TL;DR: In this article, a dual-band semi-flexible antenna operating at 2.45 GHz and 5.8 GHz for the industrial, scientific and medical (ISM) band is presented.
Abstract: In this work, a compact dual-band semi-flexible antenna operating at 2.45 GHz and 5.8 GHz for the industrial, scientific and medical (ISM) band is presented. The antenna is fabricated on a semi-flexible substrate material, Rogers Duroid RO3003™ with a low-profile feature with dimensions of 30×38 mm 2 which makes it a good solution for wearable applications. Bending investigation is also performed over a vacuum cylinder and the diameters are varied at 50 mm, 80 mm and 100 mm, that represents the average human arm’s diameter. The bending investigation sho ws that reflection coefficients for all diameters are almost similar which imply that the antenna will operate at the dual-band resonant frequencies, even in bending condition. The simulated specific absorption rate (SAR) in CST MWS® software shows that the antenna obeys the FCC and ICNIRP guidelines for 1 mW of input power. The SAR limits at 2.45 GHz for 1 g of human tissue is simulated at 0.271 W/kg (FCC standard: 1.6 W/kg) while for 10 g is at 0.0551 W/kg (ICNIRP standard: 2 W/kg. On the other hand, the SAR limits at 5.8 GHz are computed at 0.202 W/kg for 1 g and 0.0532 W/kg for 10 g.

10 citations


Cites methods from "Dual-band WiFi and 4G LTE textile a..."

  • ...One popular method to generate a dual-band frequency of operation is by introducing a slot on the radiating patch so as to alter the current path which governs the formation of each resonant frequency [6], [7]....

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Proceedings ArticleDOI
01 Dec 2015
TL;DR: In this article, the authors investigated antenna performance and under bent condition on denim substrate material and proposed an antenna design working on 2.4 GHz wearable applications and achieved an impedance bandwidth from 1.948 to 4 GHz.
Abstract: This paper presents an investigations of antenna performances and under bent condition on denim substrate material. The antenna consists of a rectangular patch with triangular slot cut at the center and a partial ground plane. The proposed antenna design working on 2.4 GHz wearable applications and achieves an impedance bandwidth from 1.948 – 4 GHz. The measured result are compared with simulated results and good agreement is achieved. The proposed antenna is a suitable candidate for wearable applications.

8 citations

References
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Journal ArticleDOI
TL;DR: In this article, a dual-band coplanar patch antenna integrated with an electromagnetic band gap substrate is described, where the antenna structure is made from common clothing fabrics and operates at the 2.45 and 5 GHz bands.
Abstract: Performance of a dual-band coplanar patch antenna integrated with an electromagnetic band gap substrate is described. The antenna structure is made from common clothing fabrics and operates at the 2.45 and 5 GHz wireless bands. The design of the coplanar antenna, band gap substrate, and their integration is presented. The band gap array consists of just 3 times 3 elements but reduces radiation into the body by over 10 dB and improves the antenna gain by 3 dB. The performance of the antenna under bending conditions and when placed on the human body are presented.

599 citations


"Dual-band WiFi and 4G LTE textile a..." refers background in this paper

  • ...In addition, antennas on textile [1]-[10] have taken a lot of attention in the last few years due to the increasing interest in wearable electronics besides the rapid progress in wireless applications....

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Journal ArticleDOI
TL;DR: In this paper, an aperture-coupled patch antenna (ACPA) was proposed for wearable textile systems. But the antenna was not made out of textile material and it was not integrated into garments.
Abstract: The emergence of wearable textile systems in recent years exhibited the need for wireless communication tools integratable into garments. In literature, several planar antenna designs based on textile materials have been presented, however, without an adapted feeding structure for wearable applications. An aperture-coupled patch antenna (ACPA) meets this requirement since the rigid coaxial feed is replaced by a microstrip feed line that couples its power into the antenna through an aperture in the ground plane. This letter presents the first ACPA entirely made out of textile material. The result is a highly efficient, fully flexible, and wearable antenna that is integratable into garments.

198 citations

Proceedings ArticleDOI
01 Nov 2006
TL;DR: How the performance of wearable textile antennas is affected on the antenna bending is described herein and the results are given for a conventional patch, EBG, and dual-band U-slot antennas.
Abstract: This paper describes how the performance of wearable textile antennas is affected on the antenna bending. Here, we will focus on the resonance frequency fluctuation and input-match bandwidth variation due to the antenna bending. The results are given for three different antennas, namely, a conventional patch, EBG, and dual-band U-slot antennas.

157 citations

Journal ArticleDOI
TL;DR: In this paper, four rectangular patch antennas for on-body wireless communications in the 2.45GHz WLAN band were designed and developed using different varieties of cotton and polyester clothing.
Abstract: Utilization of wearable textile materials for the develop- ment of microstrip antenna segment has been rapid due to the recent miniaturization of wireless devices. A wearable antenna is meant to be a part of the clothing used for communication purposes, which includes tracking and navigation, mobile computing and public safety. This pa- per describes design and development of four rectangular patch anten- nas employing difierent varieties of cotton and polyester clothing for on-body wireless communications in the 2.45GHz WLAN band. The impedance and radiation characteristics are determined experimentally when the antennas are kept in ∞at position. The performance deterio- ration of a wearable antenna is analyzed under bent conditions too to check compatibility with wearable applications. Results demonstrate the suitability of these patch antennas for on-body wireless communi- cations.

156 citations

Journal ArticleDOI
TL;DR: In this paper, the performance of wearable textile antennas is affected on the antenna bending, and the authors focus on the resonance frequency fluctuation and input-match bandwidth variation due to antenna bending.
Abstract: How the performance of wearable textile antennas is affected on the antenna bending is described herein. The authors focus on the resonance frequency fluctuation and input-match bandwidth variation due to the antenna bending. The results are given for three different antennas, namely, a conventional patch, EBG, and dual-band U-slot antennas

148 citations