A Wearable Self-Grounding Slit Antenna for ISM/4G/5G/Bluetooth/WLAN Applications

Yu, Zhen; Niu, Rui; Zhang, Guodong; Sun, Rensheng; Lin, Ziheng; Li, Yao; Ran, Xiaoying

doi:10.1109/access.2023.3305258

Cited by 8 publications

(3 citation statements)

References 18 publications

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“…EBG structures and AMC backed radiators are widely used to isolate the antenna from body tissue effect and designed using textile substrates to make antenna conformal for bending and non-planar tissue structures [ 5 – 7 ]. In [ 8 ], self-grounded technique is adopted for improving radiation efficiency and bandwidth. Surface integrated technology is looked into [ 9 ] for shielding the back scattered waves by body tissue.…”

Section: Introductionmentioning

confidence: 99%

8-port MIMO antenna at 27 GHz for n261 band and exploring for body centric communication

Gupta,

Kumari,

Sharma

et al. 2024

PLoS ONE

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This paper presents a compact 5G wideband antenna designed for body-centric networks (BCN. The single element antenna design includes a simple T-shaped radiator patch with ring shaped ground plane and transformer impedance feedline. First, the antenna was simulated in free-space, and its resonant frequency is found to be 27 GHz, falling within 5G’s n261 band. The proposed single radiator antenna has a size of 23.375 mm3, and it offers a wide impedance bandwidth of 2.0 GHz (26–28 GHz). Parametric studies demonstrated that by increasing the length of slots in patch, the antenna frequency can be reduced further. Single radiator antenna is used as 8-element MIMO structure. Parallel adjacent antenna in X-direction has minimal coupling effect, whereas antenna placed in Y-direction has high coupling effect. Thus, coupling is reduced by etching a wall of slots in ground plane. It alters the surface current interference in Y-direction and limits the coupling effect. The antenna is investigated to use in body area network applications. To evaluate its on-body performance, an equivalent body model is virtually developed. The on-body performance is assessed by placing the antenna in close proximity to body model. Stable and robust performance is achieved for the on-body operation. At the resonant point, the antenna exhibits a reflection coefficient of -30 dB (free space) and -40 dB (on-body), high isolation of above 20 dB between adjacent radiators and above 30 dB for other radiators. Antenna has stable performance for different body tissues and on the non-planar structures. Bidirectional radiation pattern with gain of 2.53 dB and broadside type orientations with gain of 4.64 dB are achieved for free space and on body operations respectively. low specific absorption rate makes antenna safe for health care devices. Further, diversity performance is measured in terms of envelope correlation coefficient (ECC), and diversity gain (DG). Maximum Value of ECC is 0.005 and minimum value DG is 9.97 at 27 GHz which confirms the excellence of antenna for MIMO applications.

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Section: Introductionmentioning

confidence: 99%

8-port MIMO antenna at 27 GHz for n261 band and exploring for body centric communication

Gupta,

Kumari,

Sharma

et al. 2024

PLoS ONE

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“…A high-profile PIFA antenna with an impedance bandwidth of 10% and a peak gain of 6.7 dBi was reported in 11 , with a size of 0.77 λ 0 × 0.51 λ 0 and made entirely of textile material. A low-profile dual-band wearable antenna with peak gains of 2.9 dBi in the 2.4 GHz band and 4.2 dBi in the 4.5 GHz frequency band was proposed 12 . However, it will be difficult to integrate into clothing as this antenna was made of polyamide material.…”

Section: Introductionmentioning

confidence: 99%

On body and off body communication using a compact wideband and high gain wearable textile antenna

Sharma,

Kumar,

Tiwari

et al. 2024

Sci Rep

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In this paper, a compact low-profile dual-band wearable textile antenna is proposed for on-body and off-body communications. The presented antenna works efficiently in the 5G n79 frequency band (4.4 − 5 GHz) and the ISM band (5.725 − 5.875 GHz). The designed antenna has an ultra-wide impedance bandwidth of 2.01 GHz and peak realized gains of 10.5 dBi and 12 dBi at 4.5 GHz and 5.8 GHz, respectively. The antenna has a small footprint (π × 0.3λ02), which is inspired by circular fractal geometry. The performance of the presented wearable antenna is evaluated at various body parts, including the arm, wrist, and chest. The link margin is evaluated in the on-body and off-body communication scenarios, i.e., communication with the implantable antenna and the outside-body antenna, which is 80 dB and 65 dB at 4.5 GHz and 5.8 GHz, respectively. The 1 gm/10 gm specific absorption rate values at 4.5 GHz and 5.8 GHz are 0.12/0.098 and 0.11/0.082, respectively, which are significantly lower than the standard values, making the proposed antenna suitable for modern wearable applications.

show abstract

“…EBG structures and AMC backed radiators are widely used to isolate the antenna from body tissue effect and designed using textile substrates to make antenna conformal for bending and non-planar tissue structures [5][6][7]. In [8], self-grounded technique is adopted for improving radiation efficiency and bandwidth. Surface integrated technology is looked into [9] for shielding the back scattered waves by body tissue.…”

Section: Introductionmentioning

confidence: 99%

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A Wearable Self-Grounding Slit Antenna for ISM/4G/5G/Bluetooth/WLAN Applications

Cited by 8 publications

References 18 publications

8-port MIMO antenna at 27 GHz for n261 band and exploring for body centric communication

8-port MIMO antenna at 27 GHz for n261 band and exploring for body centric communication

On body and off body communication using a compact wideband and high gain wearable textile antenna

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