Circularly Polarized Miniaturized Implantable Antenna for Leadless Pacemaker Devices

Lamkaddem, Abdenasser; Yousfi, Ahmed El; Abdalmalak, Kerlos Atia; Posadas, Vicente González; Segovia-Vargas, Daniel

doi:10.1109/tap.2022.3161370

Cited by 17 publications

(3 citation statements)

References 31 publications

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“…Moreover, Table 6 summarize the SAR values inside grey brain matter, small intestine lumen, stomach, and adenocarcinoma, and it can be concluded that the SAR values satisfy IEEE regulations as reported in [43]- [45].…”

Section: Table 4 Values Of the Circuit Model Cases(mentioning

confidence: 78%

“…22 (d) shows the SAR over 10 g inside the small intestine lumen which is 93 W/kg at 915 MHz and 91 W/kg at 2.4 GHz, that gives an input power of 17 mW at both frequencies. According to [43], the power delivered to the implantable antenna is around 100 µW, which consequent that the proposed antenna respects the IEEE C95.1-1999 (avg SAR<1.6W/Kg at 1 g), and the IEEE C95.1-2005 (avg SAR<2W/Kg at 10 g).…”

Section: Table 4 Values Of the Circuit Model Cases(mentioning

confidence: 93%

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Miniaturized Dual Band Implantable Antenna for Implanted Biomedical Devices

Lamkaddem,

Yousfi,

González-Posadas

et al. 2024

IEEE Access

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In this paper, we present a novel design of a compact miniaturized dual-band antenna for industrial, scientific, and medical (ISM) implantable applications working at 915 MHz and 2.4 GHz. The proposed antenna has a compact size of (6 × 6 × 0.25 mm 3 ). The antenna shows a wide bandwidth of 12.6 % at the lowest frequency and 12.8 % at the highest frequency and gain values of -21.8 dBi and -19.2 dBi at 915 MHz and 2.4 GHz, respectively which are relatively high for implantable applications. The design has been done for healthy and unhealthy tissues (adenocarcinoma). Furthermore, the fabricated prototype has been tested in minced pork as a suitable real tissue to validate the simulated results. Finally, a comparison with the recently published state-of-the-art solutions is provided showing good results in terms of size, bandwidth and gain.INDEX TERMS Dual band, frequency-independent antenna, implantable antenna, industrial, scientific, and medical (ISM) bands, miniaturization

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Section: Table 4 Values Of the Circuit Model Cases(mentioning

confidence: 78%

Section: Table 4 Values Of the Circuit Model Cases(mentioning

confidence: 93%

Miniaturized Dual Band Implantable Antenna for Implanted Biomedical Devices

Lamkaddem,

Yousfi,

González-Posadas

et al. 2024

IEEE Access

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“…Over the years, scholars at home and abroad have been committed to studying various methods to achieve antenna miniaturization, and the common methods are the folding method [14][15][16][17][18], slit method [19][20][21][22], fractal technology [23,24], metamaterial technology [25][26][27], etc. In addition, antenna miniaturization can be realized through passive loading technology, including impedance loading [28][29][30], medium loading [31,32], and slot loading [33][34][35]. In reference [36], an omnidirectional, vertically polarized (VP), wideband, electrically small near-field resonant parasitic (NFRP) filtenna is presented, and the construction of an inverted-F feeding structure not only reduces the electric size and expands FBW, but also achieves a high-pass filtering characteristic.…”

Section: Introductionmentioning

confidence: 99%

Design of UWB Electrically Small Antenna Based on Distributed Passive Network Loading

Chen,

Lin,

Luan

et al. 2024

Electronics

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In this paper, an ultra-wideband electrically small antenna based on distributed passive network loading is proposed. Based on the Vivaldi antenna theory, magnetic dipole antenna theory, and distributed loading theory, the electrically small antenna achieves the purpose of being wideband using a three-dimensional design of a planar Vivaldi antenna structure under limited space constraints. At the same time, the magnetic dipole antenna is introduced to effectively expand the low-frequency bandwidth of the electrically small antenna without increasing the aperture size. Finally, through the distributed passive network loading, the wideband-conjugated matching of the electrically small antenna is achieved without increasing the size of the electrically small antenna. The −6 dB bandwidth of the electrically small antenna is 0.2 GHz–3 GHz, and the overall size is 0.06 λ0 × 0.05 λ0 × 0.12 λ0, where λ0 is the wavelength of the lowest frequency of the antenna. One sample of the proposed UWB electrically small antenna is fabricated and tested. Good agreement between simulation results and measurement results are obtained. The design method of UWB electrically small antenna proposed in this paper can be applied to the base station antenna, low-frequency detection, microwave sensing, and microwave measurement.

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