A new method to design a multi-band flexible textile antenna [AMTA corner]

Schneider, Stephen W.; Kemp, Jeff; Georget, Élodie; Abdeddaïm, Redha; Sabouroux, Pierre

doi:10.1109/map.2014.6867723

Cited by 6 publications

(4 citation statements)

References 29 publications

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“…We conclude that the smoother the cloak's boundary, the better the wave protection. In passing, the single operation frequency could become multi-frequency with a similar approach to [34]. Fig.…”

Section: Numerical Analysis Of Various Curved Wired Mediamentioning

confidence: 99%

Single frequency microwave cloaking and subwavelength imaging with curved wired media

Ktorza¹,

Ceresoli²,

Enoch³

et al. 2015

Opt. Express

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Abstract:We consider the cloaking properties of electromagnetic wired media deduced from arbitrary coordinate transformations. We propose an interpretation of invisibility via sub-wavelength imaging features. The quality of cloaking is assessed by the level of deformation of the image of a P-shaped source through the stretched wired media: the lesser the image deformation, the more effective the cloaking. We numerically and experimentally demonstrate a tetrahedral wired cloak with longer edge length about 7cm at a frequency of 1GHz (the cloak is thus subwavelength). The wired cloak has two functionalities: it can serve as a high-resolution imaging system over long distances, and it can also perform space transformations such as, but not limited to, cloaking at a single operation frequency.

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Section: Numerical Analysis Of Various Curved Wired Mediamentioning

confidence: 99%

Single frequency microwave cloaking and subwavelength imaging with curved wired media

Ktorza¹,

Ceresoli²,

Enoch³

et al. 2015

Opt. Express

Self Cite

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show abstract

“…This technique is not very practical as it is challenging to realize robustness to stretching and resilience to high temperatures. Several textile antennas have been reported in the literature for medical applications [ 8 , 10 , 14 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 ], with few of them targeting microwave imaging applications. Most of them operate in the band from 1 to 10 GHz.…”

Section: Introductionmentioning

confidence: 99%

“…Beyond 10 GHz, scattering effects occur on the skin surface [ 14 ]. However, these reports do not provide too many experimental results or thoroughly discuss the body effects on the performance of the antennas or sensors [ 24 ].…”

Section: Introductionmentioning

confidence: 99%

Circularly Polarized Textile Sensors for Microwave-Based Smart Bra Monitoring System

et al. 2023

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This paper presents a conformal and biodegradable circularly polarized microwave sensor (CPMS) that can be utilized in several medical applications. The proposed textile sensor can be implemented in a Smart Bra system for breast cancer detection (BCD) and a wireless body area network (WBAN). The proposed sensor is composed of a wideband circularly polarized (CP) textile-based monopole antenna with an overall size of 33.5 × 33.5 mm2 (0.2 λo × 0.2 λo) and CPW feed line. The radiating element and ground are fabricated using silver conductive fabric and stitched to a cotton substrate of thickness 2 mm. In the proposed design, a slot is etched in the radiating element to extend bandwidth from 1.8 to 8 GHz at |S11| ≤ −10 dB. It realizes a circularly polarized output with AR ≤ 3 dB operation band from 1.8 to 4 GHz and an average gain of 6 dBi. The proposed CPMS’s performance is studied both off-body (air) and on-body in proximity to breast models with and without tumors using near-field microwave imaging. Moreover, the axial ratio is recorded as a feature for a circularly polarized antenna and adds another degree of freedom for cancer detection and data analysis. It assists in detecting tumors in the breast by analyzing the magnitude of the electric field components in vertical and horizontal directions. Finally, the radiation properties are recorded, as well as the specific absorption rate (SAR), to ensure safe operation. The proposed CPMS covers a bandwidth of 1.8–8 GHz with SAR values following the 1 g and 10 g standards. The proposed work demonstrates the feasibility of using textile antennas in wearables, microwave sensing systems, and wireless body area networks (WBANs).

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“…A flexible polymer-based truncated square ring antenna for circular polarisation has been discussed in [11]. Several dualband flexible antennas have also been studied in the past, such as, CPW-fed monopole antenna [12], monopole antenna loaded with rectangular patch [13], monopole antenna with grounded parasitic strips [14], elliptical planar antenna [15], CPW-fed fish-tail-shaped antenna [16], and CPW-fed inverted-cone-shaped antenna [17].…”

Section: Introductionmentioning

confidence: 99%

Flexible dual‐band dual‐polarised CPW‐fed monopole antenna with discrete‐frequency reconfigurability

Saraswat

Harish

2019

IET Microwaves, Antennas & Propagation

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A flexible dual‐band dual‐polarised CPW‐fed monopole antenna with discrete‐frequency reconfigurability is presented here. In the proposed antenna, to achieve dual‐band performance, a U‐slot is incorporated within the CPW‐fed monopole. The antenna is fabricated on a flexible and transparent substrate so that it can be used for conformal applications. The effect of antenna bending on its performance is discussed here. Further, the proposed antenna structure is extended to achieve discrete‐frequency reconfigurability. Two p‐i‐n diodes are incorporated within the monopole to achieve reconfigurability of higher band. A simplified equivalent circuit of the reconfigurable antenna is also presented and validated using full wave EM simulation. To validate the proposed structure, dual‐band antenna and discrete frequency reconfigurable antenna have been fabricated and tested.

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A new method to design a multi-band flexible textile antenna [AMTA corner]

Cited by 6 publications

References 29 publications

Single frequency microwave cloaking and subwavelength imaging with curved wired media

Single frequency microwave cloaking and subwavelength imaging with curved wired media

Circularly Polarized Textile Sensors for Microwave-Based Smart Bra Monitoring System

Flexible dual‐band dual‐polarised CPW‐fed monopole antenna with discrete‐frequency reconfigurability

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