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

W, Cui; Fan, Chao; Wang, Mengjun; Zheng, Hongxing; Li, Er‐Ping

doi:10.1002/mmce.23053

Cited by 6 publications

(4 citation statements)

References 35 publications

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“…A 'dielectric layer 1' of similar dielectric material with the same thickness is used to cover the top radiating patch. The high dielectric material is chosen so that it assists in the miniaturization of the antenna profile by shortening the effective wavelength of the electromagnetic wave [30]. Initially, the design and simulation analysis of the antenna is performed by considering a single-layer standard size homogeneous skin phantom (HSP) model to understand the feasibility of the antenna structure.…”

Section: Implantable Antenna Configurationmentioning

confidence: 99%

Design and Analysis of Compact Dual-band Antenna System for Scalp and Skin Implantation

Singh¹,

Roy²,

Ghosh³

et al. 2022

PIER C

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This article proposes a compact dual-band circular-shaped implantable antenna for scalp and skin implantation applications. The proposed antenna covers the 1.395-1.432 GHz Wireless Medical Telemetry Service (WMTS) band and 2.4-2.48 GHz Industrial, Scientific, and Medical (ISM) band with a compact volume of 0.0000017λ 3 0 . The antenna maintains a realized peak gain of −24.5 dB and −20.6 dB, respectively, at 1.43 GHz and 2.44 GHz. Moreover, the gain pattern of the antenna is in the off-body direction which is a desirable feature for implantable scenario. It also depicts stable responses under different implantation scenarios. Moreover, the via free configuration is an advantageous feature of the proposed antenna in the context of fabrication complexity. Furthermore, a holistic design approach is considered with integrated components for device-level architecture. The resonance behavior of the proposed antenna structure is also analyzed by developing a conceptual equivalent circuit model. The evaluated specific absorption rate (SAR) complies with the regulated human safety standard. The biotelemetry link capability is also evaluated through the link margin (LM) calculation of the proposed antenna and is able to establish a communication link at a range of 4.5 m distance. INTRODUCTIONThe advancement in technology has considerably influenced humans' day-to-day life. In recent times, the development of biomedical devices for human health monitoring has received considerable attention [1][2][3][4][5][6]. These biomedical devices have been broadly categorized into two different categories: (1) wearable and (2) implantable/ingestible devices where the antenna has a pivotal role to play [2,3]. Apart from wearable medical devices, researchers have taken a keen interest in the design and development of implantable medical devices (IMDs). In this regard, it is essential to note that IMDs have been developed for sensing, monitoring, stimulation, and drug delivery to improve the quality of human life [3,4]. These devices assist in patients' diagnostic and therapeutic purposes [3]. The wireless IMDs with biotelemetry functionalities are beneficial with the integration of modern communication technology [3][4][5]. The wireless IMDs comprise different components, including battery, electronic circuitry, sensor, and implantable antenna.In this context, it is worth noting that an efficient implantable antenna plays a vital role in establishing reliable communication between the IMD and external control unit. It should be noted that, unlike the traditional antenna for free-space application, designing an implantable antenna involves many challenging factors such as miniaturization, operating frequencies, specific absorption rate (SAR) for human safety, and biocompatibility with human tissue [4][5][6]. In this context, antenna miniaturization with desired characteristics is one of the main challenges as the space available for antenna placement in the compact implantable device is limited. In the recent past, researchers have propose...

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Section: Implantable Antenna Configurationmentioning

confidence: 99%

Design and Analysis of Compact Dual-band Antenna System for Scalp and Skin Implantation

Singh¹,

Roy²,

Ghosh³

et al. 2022

PIER C

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show abstract

“…Many implantable antennas with different structures and features that can meet the main requirements of IMDs have been reported in the literature. Most said antennas only offer single-band performance in the MICS, 6,7 WMTS, 8 or ISM 9,10 bands. In addition, several implantable antennas providing dual-band operation in the MICS and ISM, 11,12 the WMTS and ISM, 13,14 or two ISM 15 bands have also been proposed.…”

Section: Introductionmentioning

confidence: 99%

Miniaturized multiband implantable antenna designs for in‐body compact medical devices

Yamac

Ciflik

Basaran

2022

Int J RF Mic Comp-Aid Eng

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This article presents a triple-band implantable antenna (TBIA) and its dualband miniaturized configuration. The proposed TBIA has only a size of 102.87 mm 3 (9 mm Â 9 mm Â 1.27 mm). In addition, it provides a triple-band operation that covers all the Medical Implant Communication Service (MICS), Medical Device Radiocommunications Service (MedRadio), Medical Telemetry Service (WMTS), and Industrial, Scientific, and Medical (ISM) bands simultaneously. The compact structure with triple-band performance is essentially achieved by using a resonator consisting of three concentric split ring elements loaded with meandered lines and conductive paths between these elements.

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“…Single-band, dual-band, or multiband implantable antenna designs of various types and specifications that can meet the principal requirements of IBMDs have been reported in the literature [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25]. In this context, singleband, and dual-band implantable antenna based on splitring resonator (SRR), which are the building blocks of metamaterial structures, have been designed in [6] and [7], respectively.…”

Section: Introductionmentioning

confidence: 99%

“…Similarly, multiband miniaturized implantable antennas with spiral-shaped resonators have been designed in [15] and [16]. On the other hand, circularly polarized implantable antennas have been reported in [17] and [18] for singleband in-body applications. In [19], implantable antennas based on effective relative permittivity calculation have been discussed.…”

Section: Introductionmentioning

confidence: 99%

Compact triple-band implantable antenna for multitasking medical devices

Çelik

Basaran

2022

Journal of Electrical Engineering

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This paper presents a compact implantable antenna’s design, fabrication, and measurement for biotelemetry applications. The proposed design with the size of 255 mm3 provides a triple-band operation that covers all the Medical Implant Communication Service (MICS: 402 MHz), Medical Device Radiocommunications Service (MedRadio: 405 MHz), and Industrial, Scientific, and Medical (ISM: 433, 915 and 2450 MHz) bands simultaneously. The compact structure with triple- band performance is essentially achieved by using a spiral-like radiator loaded with meandered and internal gear-shaped elements excited by a vertical coaxial probe feed. Also, the slots-loaded partial ground plane is utilized to improve impedance matching at the desired frequency bands. The design and analysis of the antenna were carried out using the Ansoft HFSS software in a homogenous skin model and the CST Microwave Studio in a realistic human model. The proposed antenna was fabricated to validate the simulated results, and characteristics of its return loss and radiation patterns were measured in minced pork meat. Moreover, realized gains and specific absorption rate (SAR) values of the antenna were numerically computed using the simulators. Based on the simulated and measured results, the proposed antenna performance was found to be comparable to the limited number of multiband implantable antenna designs reported in the recent literature.

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

Cited by 6 publications

References 35 publications

Design and Analysis of Compact Dual-band Antenna System for Scalp and Skin Implantation

Design and Analysis of Compact Dual-band Antenna System for Scalp and Skin Implantation

Miniaturized multiband implantable antenna designs for in‐body compact medical devices

Compact triple-band implantable antenna for multitasking medical devices

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