Broad‐band embroidered spiral antenna for off‐body communications

Zhang, Shiyu; Paraskevopoulos, Anastasios; Luxey, Cyril; Pinto, J.; Whittow, William G.

doi:10.1049/iet-map.2015.0848

Cited by 11 publications

(11 citation statements)

References 17 publications

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“…The solution of (15) returns the slopes and the intercepts of the four different lines that are tangent to the ellipses, which are denoted by m i and c i , with i ∈ [1,4]. From the slopes and the intercepts, the tangent points (x p0_i , y p0_i ) and (x p1_i , y p1_i ), for E 0 and E 1 respectively, can be worked out as shown in (16) and (17).…”

Section: ) Mathematical Parametric Characterisationmentioning

confidence: 99%

From Threads to Smart Textile: Parametric Characterization and Electromagnetic Analysis of Woven Structures

et al. 2019

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This paper presents a complete and enhanced description of a parametric characterization and an electromagnetic analysis technique in order to simulate complex woven structures for the design of wearable microwave circuits and antennas based on smart textile. On the one hand, the parametric characterization consists of achieving the mathematical models which describe the different patterns conformed by the threads of the woven structures. This characterization takes into account the possible deformations of the materials inside the woven structure. On the other hand, the electromagnetic analysis technique consists of studying the conductive or dielectric parameters which describe the materials from which the threads have been extruded, and predicting the electromagnetic behavior of whole woven structures using the already explained parametric characterization. For this purpose, three different, although electromagnetically equivalent, models of the involved materials are needed, which subsequently reduce the computational resources required in the simulations. As a result, the woven structures can be characterized from the involved threads and the electromagnetic behavior can be analyzed in order to design wearable antennas or circuits.

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Section: ) Mathematical Parametric Characterisationmentioning

confidence: 99%

From Threads to Smart Textile: Parametric Characterization and Electromagnetic Analysis of Woven Structures

et al. 2019

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“…Due to the large size and weight of the specific anthropomorphic mannequin (SAM) phantom, there is inherent difficulty in measuring the wearable spiral antenna with the conventional far-field measurement technique [60]. A novel cylindrical near-field measurement methodology was adopted to get the simulation results in Figures 10(a) and 10(b).…”

Section: Wearable Textile Antennasmentioning

confidence: 99%

Material Selection and Fabrication Processes for Flexible Conformal Antennas

Monne

Lan

Chen

2018

International Journal of Antennas and Propagation

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Flexible antennas offer many advantages for communication, radar, RF identification, and energy harvesting applications. A review on the material selection and fabrication process of flexible antennas is presented since these aspects are critical to the antenna’s overall electrical and mechanical performance. A number of different material and fabrication techniques are reviewed in detail for different types of antennas. In addition, experimental results are also discussed for these antennas, which further underlines the importance of material selection and the various fabrication processes.

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“…for satellite applications, and for low gain antennas that radiate significant amount of energy at high elevation angles. Particularly, for wearable antennas characterisation, the CNF technique appears to be suitable for the majority of antenna types and locations on the human body due to the strong scattering effect created from the presence of the full-body phantom that increases the antenna's directivity [23,24].…”

Section: Proposed Cnf Techniquementioning

confidence: 99%

Cylindrical near‐field assessment of wearable antennas for body‐centric communications

Paraskevopoulos

Tsolis

Vardaxoglou

et al. 2017

IET Microwaves, Antennas & Propagation

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In this study, a measurement methodology is proposed for characterising wearable antennas on different locations of the human body. With the conventional roll‐over‐azimuth far‐field system, it is impractical to capture the full spherical radiation pattern. A cylindrical near‐field (CNF) technique is employed here which facilitates wearable antenna measurements on a solid full‐body anthropomorphic phantom and readily produces the antenna radiation efficiency. The installed antenna efficiency is an important parameter for optimising a wearable system design and improving channel performance. The procedure of the CNF measurement is validated using a printed dipole antenna as a reference in horizontal and vertical polarisation parallel to body surface. Two textile wearable antennas with distinct radiation characteristics are designed, fabricated and assessed on the body phantom to operate at 2.4 GHz ISM band. Near‐field and transformed far‐field measurement results are presented and compared with electromagnetic simulations in order to demonstrate the benefits of the proposed measurement method.

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Broad‐band embroidered spiral antenna for off‐body communications

Cited by 11 publications

References 17 publications

From Threads to Smart Textile: Parametric Characterization and Electromagnetic Analysis of Woven Structures

From Threads to Smart Textile: Parametric Characterization and Electromagnetic Analysis of Woven Structures

Material Selection and Fabrication Processes for Flexible Conformal Antennas

Cylindrical near‐field assessment of wearable antennas for body‐centric communications

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