A miniaturized circularly polarized implantable RFID antenna for biomedical applications

Zhang, Yudi; Liu, Changrong; Liu, Xueguan; Zhang, Ke

doi:10.1002/mmce.22105

Cited by 17 publications

(9 citation statements)

References 24 publications

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“…Zhang et al designed a miniaturized circularly polarized patch antenna. 14 An axial ratio bandwidth of this antenna is about 5.8%. A multilayer miniaturized helical antenna has been designed demonstrated in industrial, scientific and medical (ISM) band experimentally.…”

Section: Introductionmentioning

confidence: 93%

Design of circularly polarized implantable antenna for wireless intracranial pressure monitoring system

Fan

Wang

et al. 2021

Int J RF Mic Comp-Aid Eng

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Monitor of intracranial pressure (ICP) system is a life-saving instrument that monitors changes in brain pressure in real time. To implement wireless data transfer, antenna is an indispensable device. In this paper, an implantable antenna is designed with circularly polarized, wideband and compact in size to adapt the application of the ICP monitoring system. First, a one-layer human skin model to verify the basic characteristics of this antenna; and then a multilayered human head model is built to demonstrate the system performance of the designed antenna. In addition, we also considered the human safety to calculate the specific absorption rate value of the proposed antenna. The antenna can transmit different rates over to 1.5 m distance verified by the wireless communication link, which proved it has a good transitions characteristic. Finally, the sample of the antenna is fabricated and tested with help of fresh minced pork. Experiment results shows the antenna with a good property in the ICP monitoring system, as well as other remote medical telemetry system.

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Section: Introductionmentioning

confidence: 93%

Design of circularly polarized implantable antenna for wireless intracranial pressure monitoring system

Fan

Wang

et al. 2021

Int J RF Mic Comp-Aid Eng

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“…Fig. 8 shows the homogeneous multilayered model with a dimension of 80 × 40 × 63 mm 3 used to model human tissue [31]. The values of electrical properties are tuned around 40 GHz, the implanted depth in skin layer is 2 mm.…”

Section: Human-body Phantom Modelingmentioning

confidence: 99%

Single-Chip Two Antennas for MM-Wave Self-Powering and Implantable Biomedical Devices

Elsheakh¹,

Kayed²,

Shawkey³

2021

ACES

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Implantable biomedical applications arise the need for multi-band sensors with a wideband frequency channel for RF energy harvesting operation. Using a separate antenna for energy harvesting can simplify device circuit complexity and reduces operation frequency bands interference. This paper demonstrates the design of single chip with two separate integrated antennas for implantable biomedical applications. The two antennas have different structures with orthogonal polarization to achieve low mutual coupling and negligible interaction between them. The first antenna is a multi-band meander line (MBML) designed for multiple channels data communication, with quad operating bands in the MM-wave range from 22-64 GHz with area 1150 × 200μm2. The second antenna is a wideband dipole antenna (WBDA) for RF energy harvesting, operates in the frequency range extend from 28 GHz to 36 GHz with area 1300×250μm2. The proposed antennas are designed by using high frequency structure simulator (HFSS) and fabricated by using UMC180nm CMOS technology with total area 0.55 mm2. The MBML frequency bands operating bandwidths can reach 2 GHz at impedance bandwidth ≤ -10 dB. While, the WBDA antenna has gain -2 dB over the operating band extend from 28 GHz up to 36 GHz. The antenna performance is simulated separately and using the human-body phantom model that describes layers of fats inside body, and shows their compatibility for in body operation. Die measurements is performed using on wafer-probing RF PICOBROBES and shows the matching between simulation and measurement values.

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“…In all the implantable linearly polarized antennas indicated above, only half of the power received by the outdoor antennas. Therefore the electromagnetic loss is very high due to polarization mismatch and to reduce power loss, design of compact circular polarized implantable antenna plays a vital role for healthy communication 7 …”

Section: Introductionmentioning

confidence: 99%

“…Therefore the electromagnetic loss is very high due to polarization mismatch and to reduce power loss, design of compact circular polarized implantable antenna plays a vital role for healthy communication. 7 In Reference 8 multilayer helical antenna with the CP nature carries a large bandwidth but dimensions are outsized. The author reported in reference 9 meandering slot capacitive-loaded circular polarized implantable antenna with the bandwidth of 200 MHz and À22 dB peak gain with complex antenna design.…”

Section: Introductionmentioning

confidence: 99%

Inductive and capacitive loaded miniaturized implantable patch antenna with circular polarization for bio‐medical applications

Perumalla

Muthusamy

2022

Int J RF Mic Comp-Aid Eng

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Implantable coaxial fed patch (ICFP) antenna with circular polarization operating at 2.45 GHz Industrial Scientific and Medical (ISM) Band is fabricated, measured in 500 ml mimicking gel and 1.3 Kg of chicken breast tissue used for biomedical applications. The miniaturized ICFP antenna is experimentally validated and reported in this research work. The volume of the ICFP antenna is 10 Â 9.2 Â 2.56 mm 3 features a compact size by employing meandered slots on the patch, shorting pins and defective ground structure (DGS) on the ground plane for reducing the size and enhancing the bandwidth. Moreover, introducing circular ring slots and notches on both sides of the patch achieved the circular polarization. The results exhibit good matching between the coaxial feed and the proposed antenna. In this research, the implantable structure resonates at À10 dB S 11 with impedance bandwidth 200 MHz (2.35-2.55 GHz) and 200 MHz circular polarized-3 dB bandwidth is observed from 2.35 to 2.55 GHz. Additionally, the specific absorption rate (SAR) value analyzed as 0.98 W/kg in a three-layered human tissue model.

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A miniaturized circularly polarized implantable RFID antenna for biomedical applications

Cited by 17 publications

References 24 publications

Design of circularly polarized implantable antenna for wireless intracranial pressure monitoring system

Design of circularly polarized implantable antenna for wireless intracranial pressure monitoring system

Single-Chip Two Antennas for MM-Wave Self-Powering and Implantable Biomedical Devices

Inductive and capacitive loaded miniaturized implantable patch antenna with circular polarization for bio‐medical applications

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