A novel wearable dual-band textile antenna, designed for optimal on-body performance in the 2.4 and 5.8 GHz Industrial, Scientific Medical bands, is proposed. By using brass eye-lets a combination of conducting non-conductive materials, half-mode substrate integrated waveguide cavity with ground plane realized that very compact flexible, while still directing radiation away from wearer. Additional miniaturization achieved by adding row shorting vias slots. Beside excellent free space...

A novel wearable substrate integrated waveguide antenna fabricated entirely from textile materials is presented. The cavity-backed slot operates in the 2.45 GHz industrial, scientific and medical band, for short range communication between rescue workers. prototype of was tested: good performance obtained terms input matching radiation pattern. Moreover, measurements performed on after bending integration into clothing indicate high robustness against deformation low influence human body...

A miniaturized wearable antenna, entirely implemented in textile materials, is proposed that relies on a quarter-mode substrate integrated waveguide topology. The design combines compact dimensions with high body-antenna isolation, making it excellently suited for off-body communication electronics/smart applications. fabricated antenna achieves stable on-body performance. measured impedance matching bandwidth of 5.1% obtained, versus 4.8% free space. gain equals 3.8 dBi the and 4.2...

Although substrate integrated waveguide (SIW) technology is well established for the fabrication of microwave circuits on rigid printed circuit boards, and first implementations textile SIW antennas have recently appeared in literature, up to now, no complete set components has been presented. Therefore, this paper describes design, manufacturing, testing a new class wearable applications, implemented technology. After characterizing adopted fabrics material terms electrical properties, it...

A novel dual-band substrate-integrated waveguide (SIW) antenna array topology is proposed for operation in the 28 and 38 GHz frequency bands. Four miniaturized quarter-mode SIW cavities are tightly coupled, causing mode bifurcation, yielding an with four distinct resonance frequencies. pair of resonances assigned to both band, achieving wideband ranges. Moreover, owing exploited miniaturization technique, extremely compact obtained, facilitating easy straightforward integration. The...

A novel wideband substrate integrated waveguide (SIW) antenna topology, consisting of coupled half-mode and quarter-mode SIW resonant cavities, is proposed for operation in the 60 GHz band. This innovative topology combines a considerable bandwidth enhancement low form factor with compatibility low-cost printed circuit board manufacturing processes, making it excellently suited next generation, high data rate wireless applications. Moreover, exploiting technology, antenna-platform isolation...

A wideband half-mode substrate-integrated-waveguide cavity-backed slot antenna covering all Unlicensed National Information Infrastructure (U-NII) radio bands (5.15-5.85 GHz) is designed, fabricated, and validated. By a implementation of multimoded cavity with nonresonant slot, compact ultrawideband obtained very stable radiation characteristics, owing to the excellent antenna/platform isolation. Cork material applied as substrate, making proposed suitable for integration into floors or...

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 (SHF) band. The powered by an integrated light harvester, a flexible battery serving as energy buffer. proposed active features excellent wearability, very high read range, enhanced functionality, interfacing diverse low-power sensors, extended system autonomy through innovative holistic microwave design paradigm that...

A novel antenna design for wideband operation is presented, consisting of a system two coupled miniaturized eighth-mode resonant radiating cavities with low-complexity feeding network. The methodology relies on the virtual magnetic boundaries along symmetry planes rectangular waveguide resonator, size reduction, and frequency bifurcation tightly resonators, bandwidth enhancement. After discussing its operating principle, prototype targeting wearable applications designed, manufactured,...

Abstract For the first time, a personal distributed exposimeter (PDE) for radio frequency (RF) measurements is presented. This PDE designed based on numerical simulations and experimentally evaluated using textile antennas wearable electronics. A prototype of calibrated in an anechoic chamber. Compared to conventional exposimeters, which only measure one position body, excellent isotropy 0.5 dB (a factor 1.1) 95% confidence interval 7 5) power densities are measured. Bioelectromagnetics....

Two radio-frequency personal exposimeters (PEMs) worn on both hips are calibrated a subject in an anechoic chamber. The PEMs' response and crosstalk determined for realistically polarised incident electric fields using this calibration. 50 % confidence interval of the is reduced (2.6 dB average) when averaged over PEMs. A significant (up to ratio 1.2) measured, indicating that PEM measurements can be obfuscated by crosstalk. Simultaneous with two PEMs carried out Ghent, Belgium. highest...

This study presents a circularly‐polarised substrate‐integrated waveguide (SIW) antenna implemented using textile substrate and operating at 2.45 GHz, in the industrial, scientific, medical frequency band. The topology is based on folded cavity with an annular ring as radiating element, it permits to obtain compact size low sensitivity environment, without deteriorating performance. These characteristics, together choice of adopting substrate, make SIW suitable for integration wearable...

Wireless medical devices implanted at different locations in the human body have a wide application range. Yet, high-data-rate communication 2.4-GHz Industrial, Scientific, and Medical band suffers from high in-body attenuation loss. Link improvement cannot be obtained by simply increasing transmit power, as battery life is limited absorption has to remain low. To overcome these problems, flexible on-body textile patch antenna, robustly matched directly body, designed developed part of...

ATTO targets wireless networking at fiber speed: 100 Gb/s/m <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> with latencies smaller than 10 μs. To provide this tremendous capacity, ultrasmall floor-integrated cells are proposed. In way, short-reach communication can be established, reducing the effect of interference and providing full frequency reuse in domain. Radio (RF)-over-fiber coherent a dedicated 2-D passive optical network...

One of the many adverse effects modifying performance textile antennas in real operating conditions is substrate compression. Therefore, this communication presents a stochastic collocation method (SCM) that either relies on generalized polynomial chaos (gPC) expansion or novel Hermite-Padé approximant. The introduced to rigorously quantify effect random variations height and permittivity figures merit antenna. Next, joint probability distribution compressible are characterized by means new...

This paper describes the design, calibration, and measurements with a personal, distributed exposimeter (PDE) for on-body detection of radio frequency (RF) electromagnetic fields due to Wireless Fidelity (WiFi) networks. Numerical simulations show that using combination two RF nodes placed on front back body reduces 50% prediction interval (PI50) incident free-space electric-field strength (Equation is included in full-text article.). Median reductions 10 dB 9.1 are obtained compared PI50...

A multi-band Body-Worn Distributed exposure Meter (BWDM) calibrated for simultaneous measurement of the incident power density in 11 telecommunication frequency bands, is proposed. The BDWM consists 22 textile antennas integrated a garment and on six human subjects an anechoic chamber to assess its uncertainty terms 68% confidence interval on-body antenna aperture. It shown that by using multiple each band, BWDM dB improved with respect single nodes front back torso variations are decreased...

A dual semicircular microstrip patch antenna implemented on a biodegradable substrate is presented for operation in the [863-873] MHz and [2.4-2.5] GHz frequency bands. To cover these bands, two patches are compactly integrated onto cork tile, commonly found as support laminate flooring, serving substrate. Thereby, tile may be seamlessly embedded sublayer of floor structure. higher-order mode generated by applying via pins topology to produce conical radiation pattern with null at broadside...

Two types of low-loss mechanically reconfigurable phase shifters at E-band based on gap waveguide (GW) technology, the GW slow wave and width-variation, are proposed in this letter. Phase shifts achieved by mechanical movements. To avoid leakage undesired resonances during movement, quasi-PEC-AMC structures implemented. The have been fabricated measured. results show that insertion losses about 0.4 0.3 dB, reflection coefficients better than −13 −15 dB for width variation, respectively, over...

New wireless wearable monitoring systems integrated in professional garments require a high degree of reliability and autonomy. Active textile antenna may serve as platforms for body-centric sensing, localisation, communication systems, the meanwhile being comfortable invisible to wearer. We present new dedicated comprehensive design paradigm combine this with adapted signal-processing techniques that greatly enhance robustness autonomy these systems. On one hand, large amount real estate...

For the first time, a body area network (BAN) is used to construct personal, distributed exposimeter (PDE), which can measure whole-body averaged specific absorption rate (SAR <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">wb</sub> ) in real life, together with incident power density (S xmlns:xlink="http://www.w3.org/1999/xlink">inc</sub> ). The BAN consists of four textile antennas integrated radio frequency receiver nodes tuned Global System...

An advanced transmit remote opto-antenna unit is proposed that accomplishes impedance matching between a photodetector and low-profile antenna in specified frequency bandwidth, without requiring an area-consuming network. This results highly compact design, which also avoids the losses spurious radiation by such electrically large circuit. Instead, almost directly connected to antenna, designed as conjugate load, extracted radiated power are optimized. The required input for obtained...

A novel remote antenna unit, intended for application in the downlink of an analog radio frequency over fiber system, is proposed, whose radiated power originates entirely from optical signal supplied by a single multimode fiber. By operating photodetector receiver at zero bias voltage, while omitting typical active components, such as transimpedance amplifiers, fully passive requiring no external supply, obtained. Instead, careful co-design performed to maximize transfer within range...

A novel, low-cost, low-weight, wearable Doppler radar system composed of textile materials and capable detecting moving objects behind a barrier is presented. The operates at 2.35 GHz integrable into garments, making it well-suited for usage in difficult to access terrain, such as disaster areas or burning buildings. Wearability maximized by relying on flexible, breathable manufacture the key parts system. low-complexity makes use an array four textile-transmit antennas scan surroundings....