Fractal slot loaded compact wearable button antenna for IOT and X-band applications

Dash, Rajib Kumar; Saha, Puspendu Bikash; Ghoshal, Dibyendu; Palai, G.

doi:10.1007/s11276-022-03145-z

Cited by 6 publications

(3 citation statements)

References 34 publications

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“…To achieve a multiband response, the authors used the method of fractural slot loading. Furthermore, the increased bandwidth comes at the expense of structural complexity [36]. To lower the SAR of a meander line antenna for wearable applications, a truncated ground technique is adopted.…”

Section: Antenna Performance Under Wet and Humid Conditionsmentioning

confidence: 99%

Compact Flexible Planar Antennas for Biomedical Applications: Insight into Materials and Systems Design

Venkatachalam,

Jagadeesan,

Ismail

et al. 2023

Bioengineering

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Planar antennas have become an integral component in modern biomedical instruments owing to their compact structure, cost effectiveness, and light weight. These antennas are crucial in realizing medical systems such as body area networks, remote health monitoring, and microwave imaging systems. Antennas intended for the above applications should be conformal and fabricated using lightweight materials that are suitable for wear on the human body. Wearable antennas are intended to be placed on the human body to examine its health conditions. Hence, the performance of the antenna, such as its radiation characteristics across the operating frequency bands, should not be affected by human body proximity. This is achieved by selecting appropriate conformal materials whose characteristics remain stable under all environmental conditions. This paper aims to highlight the effects of human body proximity on wearable antenna performance. Additionally, this paper reviews the various types of flexible antennas proposed for biomedical applications. It describes the challenges in designing wearable antennas, the selection of a flexible material that is suitable for fabricating wearable antennas, and the relevant methods of fabrication. This paper also highlights the future directions in this rapidly growing field. Flexible antennas are the keystone for implementing next-generation wireless communication devices for health monitoring and health safety applications.

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Section: Antenna Performance Under Wet and Humid Conditionsmentioning

confidence: 99%

Compact Flexible Planar Antennas for Biomedical Applications: Insight into Materials and Systems Design

Venkatachalam,

Jagadeesan,

Ismail

et al. 2023

Bioengineering

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“…tennas [15][16][17]. Internet of Things (IoT) is a new significant technique that enhances workability and increases the demand for communications among different devices.…”

Section: Introductionmentioning

confidence: 99%

A Red Cross Bag MPA with a Very Low SAR and High F/B Ratio for Bio-medical Applications

Mekki,

Monther Yousif,

Baraa

2024

PIER Letters

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A microstrip patch antenna of red cross bag shape is designed, simulated, and fabricated. The antenna is designed to work at 5.8 GHz for on-body applications. Small size, low specific absorption rate, and high front to back ratio with a low-profile design are achieved. The measured frequency is 5.878 GHz with 25 mm as the largest dimension used, and the matching impedance is −47.06 dB. Other parameters are recorded from the simulator such as front-to-back ratio which is 37.37 dB and a specific absorption rate of 0.0984 W/kg in 10 gm. Finally, this work is compared with a compact dual-band antenna with paired L-shape slots, a watchstrap integrated wideband antenna, and a dual-band AMC-based MIMO antenna. The proposed red cross bag antenna overcomes the mentioned works in terms of small size, high front-to-back ratio, and low specific absorption rate.

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“…It has been noticed that the main contribution of the proposed approach is to enhance the bandwidth without any significant improvement in the SAR reduction. In [37], the authors employed a fractural slot loaded approach to attain multiband response. Moreover, the bandwidth enhancement is achieved at the cost of structural complexity.…”

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confidence: 99%

Design, Analysis and Applications of Wearable Antennas: A Review

et al. 2023

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Wearable antennas are the vital components for Body Centric Communication (BCC). These antennas have recently gained the attention of researchers and have received a great deal of popularity due to their attractive characteristics and opportunities. They are fundamental in the Wireless Body Area Networks (WBANs) for health care, military, sports, and identification purposes. Compared to traditional antennas, these antennas work in close proximity to the human body, so their performance in terms of return loss, gain, directivity, bandwidth, radiation pattern, efficiency, and Specific Absorption Rate (SAR) is influenced by the coupling and absorption of the human body tissues. Additionally, in the design of these antennas, size, power consumption, and speed can also play a paramount role. In most cases, these antennas are integrated into the clothes, or in some cases, they may be fixed over the skin of the users. When these characteristics are considered, the design of wearable antennas becomes challenging, particularly when textile materials are examined, high conductivity materials are used during the manufacturing process, and various deformation scenarios have an impact on the design's performance. To enhance the overall performance of the wearable antennas and to reduce the backward radiation towards the human body, metamaterial surfaces are introduced that provide a high degree of isolation from the human body and significantly reduce the SAR. This paper discusses the state-of-the-art wearable/textile/flexible antennas integrated with metamaterial structures composed of wearable/flexible substrate materials, with a focus on single and dual band antenna designs. The paper also reviews the critical design issues, various fabrication techniques, and other factors that need to be considered in the design of wearable/textile/flexible antennas. All the designs presented in this work are of the recent developments in wearable technology. INDEX TERMS BCC, WBAN, SAR, metamaterial, and wearable/textile/flexible antennas I. INTRODUCTIONRecently, Body Centric Wireless Communication (BCWC) has become one of the most important parts of the fourth generation (4G) mobile communication systems. The fifth generation (5G) is an encouraging technology which will not only fulfil the need of a high data rate for mobile phones and similar devices but also enable incorporation with different high added value services [1]. The IEEE 802.15 standardization group has been established to standardize applications intended for on, off, and in-body communication due to the growing interest in antennas and wave propagation for body centric communication systems [2]. BCWC is a type of communication which is used to connect devices which are worn on or in the body, or between the two people in close proximity. It is further divided into three different categories according to the mean of communication, they are on-body, in-body and off-body communication [3][4][5]. On-body communication describes the wireless communication between the body-mou...

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Fractal slot loaded compact wearable button antenna for IOT and X-band applications

Cited by 6 publications

References 34 publications

Compact Flexible Planar Antennas for Biomedical Applications: Insight into Materials and Systems Design

Compact Flexible Planar Antennas for Biomedical Applications: Insight into Materials and Systems Design

A Red Cross Bag MPA with a Very Low SAR and High F/B Ratio for Bio-medical Applications

Design, Analysis and Applications of Wearable Antennas: A Review

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