Dual-Band Substrate Integrated Waveguide Textile Antenna With Integrated Solar Harvester

Lemey, Sam; Declercq, Frederick; Rogier, Hendrik

doi:10.1109/lawp.2014.2303573

Cited by 80 publications

(74 citation statements)

References 10 publications

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“…Several alternative textile antenna topologies were proposed in the last few years, aiming at the reduction of the antenna footprint. They include single band [11], [12] and dual band [13], [14] half-mode or quarter-mode [15] substrate integrated waveguide textile antennas, as well as folded [16] and folded half-mode SIW cavity-backed antennas [17].…”

Section: Introductionmentioning

confidence: 99%

Circularly‐polarised cavity‐backed wearable antenna in SIW technology

Moro

Agneessens

Rogier

et al. 2017

IET Microwaves, Antennas & Propagation

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This paper presents a circularly-polarized substrate integrated waveguide (SIW) antenna implemented in a textile substrate and operating at 2.45 GHz, in the industrial, scientific, and medical (ISM) frequency band. The antenna topology is based on a folded cavity with an annular ring as radiating element, and it permits to obtain compact size and low sensitivity to the environment, without deteriorating the radiating performance. These characteristics, together with the choice of adopting a textile substrate, make the SIW antenna suitable for the integration in wearable systems for body-centric applications. The electromagnetic performance of the proposed antenna achieved in simulations were verified through the measurement of the device in an anechoic chamber. The circularly-polarized antenna exhibits a maximum gain of 6.5 dBi, a radiation efficiency of 73% and a very high front-to-back ratio. IntroductionThe implementation of wireless systems for bodycentric communication has become a hot research topic in the last few years [1], [2]. The use of textile materials as the substrate for microwave components and systems appears a very promising feature that guarantees great advantages in the realization of wearable systems for wireless communication. , with the aim of increasing the antenna efficiency and reducing its size. Moreover, textile antennas using snap-on buttons were recently proposed [7].A very promising approach for the implementation of components and antennas on textile is the substrate-integrated waveguide (SIW) technology [8]. SIW technology permits to integrate active components, passive elements and antennas in a single substrate. Moreover, these components may be implemented in a multilayer structure, thus reducing the size of the devices and the losses of the systems [8], [9]. These characteristics make SIW technology suitable for several applications: it can be applied in the design of many different systems for wireless area networks, mobile communication, short and medium range communication. In most of them, circular polarization is desired to improve the communication channel and the efficiency of the system. In fact, conformal SIW structures can be easily fabricated by adopting a standard fabrication process that maintains the typical flexibility of textile substrate. Moreover, the SIW circuits are completely shielded: this feature is essential for wearable applications since the interaction between microwave components and the human body must be as low as possible.The realization of the first cavity-backed SIW antenna on textile [10] demonstrated the advantages of the combination of SIW technology with textile materials. Several alternative textile antenna topologies were proposed in the last few years, aiming at the reduction of the antenna footprint. They include single band [11]

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Section: Introductionmentioning

confidence: 99%

Circularly‐polarised cavity‐backed wearable antenna in SIW technology

Moro

Agneessens

Rogier

et al. 2017

IET Microwaves, Antennas & Propagation

Self Cite

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“…A low-cost protective textile foam ( r = 1.42 and tan d = 0.016 at 2.45 GHz, H SUB = 3.94 mm [41]) is used as an antenna substrate to achieve sufficient bandwidth, while guaranteeing a low-profile, flexible, and lightweight antenna design. The conductive patch and ground plane are fabricated from conductive textile materials (surface resistivity R s = 0.18 /sq [41]), which are laminated to the dielectric antenna substrate by means of a thermally activated glue. Hollow, brass eyelets realize the shorting connections between the ground plane and the antenna patch.…”

Section: Textile Antenna Design and Fabricationmentioning

confidence: 99%

Wearable Flexible Lightweight Modular RFID Tag With Integrated Energy Harvester

Lemey

Agneessens

Torre

et al. 2016

IEEE Trans. Microwave Theory Techn.

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Abstract-A novel wearable radio frequency identification (RFID) tag with sensing, processing, and decision-taking capability is presented for operation in the 2.45-GHz RFID superhigh frequency (SHF) band. The tag is powered by an integrated light harvester, with a flexible battery serving as an energy buffer. The proposed active tag features excellent wearability, very high read range, enhanced functionality, flexible interfacing with diverse low-power sensors, and extended system autonomy through an innovative holistic microwave system design paradigm that takes antenna design into consideration from the very early stages. Specifically, a dedicated textile shorted circular patch antenna with monopolar radiation pattern is designed and optimized for highly efficient and stable operation within the frequency band of operation. In this process, the textile antenna's functionality is augmented by reusing its surface as an integration platform for light-energy-harvesting, sensing, processing, and transceiver hardware, without sacrificing antenna performance or the wearer's comfort. The RFID tag is validated by measuring its stand-alone and on-body characteristics in free-space conditions. Moreover, measurements in a real-world scenario demonstrate an indoor read range up to 23 m in nonlineof-sight indoor propagation conditions, enabling interrogation by a reader situated in another room. In addition, the RFID platform only consumes 168.3 µW, when sensing and processing are performed every 60 s.Index Terms-Battery-assisted, energy harvesting, Internet of Things (IoT), radio frequency identification (RFID), textile antenna, wearable.

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“…To further improve the bandwidth performance of the SIW slot antenna while maintaining its unidirectional characteristics, the excitation of hybrid modes in SIW cavity is introduced in [14]. Many designs have been reported recently to generate dual band and broadband performance in SIW cavity-backed slot antenna [15,16]. SIW cavity backed bow-tie slot was proposed to improve the bandwidth of the antenna up to 9.4% [17].…”

Section: Introductionmentioning

confidence: 99%

Design of Hilbert Slot Substrate Integrated Waveguide (SIW) Antenna

Amer¹,

Mahmood²

2018

IJCA

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In this paper, a new design of miniature, dual-band Hilbert SIW slot antenna is introduced. The antenna is printed on a h=1mm thick dielectric substrate with dielectric constant ( =4.3). The slot antenna is cut on the top plane of the substrate and fed using a microstrip transmission line. The proposed antenna possesses a miniature size with a slot side length of about half the guided wavelength. Furthermore, the antenna performance curves show that it offers a multiband behavior with enhanced bandwidths. The proposed three Hilbert slots SIW antenna resonates at 4.6 and 9.3 GHz with bandwidths of 3.7 and 6.77 % within a return loss of -23.4 and -40.12 dB respectively. The simulation results show gains of 4.41 and 5.76 dB i , with radiation efficiency of -1.360 and -0.7283 dB. Such antennas can be ideal candidates for C and X-band applications. Keywordsa slot antenna, dual-band, substrate integrated waveguide (SIW).

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Dual-Band Substrate Integrated Waveguide Textile Antenna With Integrated Solar Harvester

Abstract: Abstract-

Cited by 80 publications

References 10 publications

Circularly‐polarised cavity‐backed wearable antenna in SIW technology

Circularly‐polarised cavity‐backed wearable antenna in SIW technology

Wearable Flexible Lightweight Modular RFID Tag With Integrated Energy Harvester

Design of Hilbert Slot Substrate Integrated Waveguide (SIW) Antenna

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