Miniaturized wideband implantable slotted loop antenna for biotelemetry applications
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Palanivel Rajan Selvakumaran
Abstract
Small size of the implantable antenna is the major concern in Implantable Medical Devices. A compact implantable wideband radiator working at the ISM band is proposed for biotelemetry applications. The overall dimension of the proposed radiator is 10 mm ⁎ 15 mm ⁎ 0.8 mm and the thickness includes substrate and superstrate thickness. The Coaxial feeding method is employed here. The inner and outer diameter of the coaxial feed is 1 and 1.5 mm respectively. The design process starts with a creation of rectangular patch of size 10 mm ⁎ 15 mm and the coaxial feed is located at (2.5, 7). Then slot like loops are introduced on a rectangular patch. This compact size is achieved by introducing small loops on a rectangular patch along with triangular cuts at the bottom right and top-left of the patch. The antenna is simulated with a tissue model (Skin, Fat, Muscle, Bone) and measured with a Body Equivalent Fluid (phantom). The −10 dB bandwidth is obtained over 1340 MHz (1.66–3 GHz) and the fractional bandwidth of 54.7% at the ISM band. The simulated gain and radiation efficiency of the radiator are −13.5 dBi and 3.15% respectively. The measured return loss of the proposed antenna is −30.53 dB and the SAR value averaged over 1 g tissue is 302.6 W/kg with 1 W input power. When compared to the previous works mentioned in the literature the proposed antenna displays wider bandwidth, high gain, low SAR and high radiation efficiency.
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Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
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Research funding: None declared.
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Conflict of interest statement: The authors declare no conflicts of interest regarding this article.
References
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© 2022 Walter de Gruyter GmbH, Berlin/Boston
Articles in the same Issue
- Frontmatter
- Research Articles
- Coaxial resonant cavity for measuring complex permittivity of liquids
- Analysis of quad-band polarization- and incident-angle independent low profile metamaterial absorber
- Radiation pressure of a hybrid bianisotropic chiral structure
- Improving the automatic target recognition algorithm’s accuracy through an examination of the different time-frequency representations and data augmentation
- On the effect of array size on the radar cross section reduction bandwidth of checkerboard metasurfaces
- Analysis and synthesis of L- and T-shaped flexible compact microstrip antennas using regression-based machine learning approaches
- Novel implantable antenna with miniaturized footprint size for wideband biomedical telemetry applications
- Circular shape monopole antenna with modified ground plane proclaiming SWB characteristics
- Miniaturized wideband implantable slotted loop antenna for biotelemetry applications
- A 156 GHz high-power doubler-embedded cross-coupled local oscillator in 55 nm CMOS technology
Articles in the same Issue
- Frontmatter
- Research Articles
- Coaxial resonant cavity for measuring complex permittivity of liquids
- Analysis of quad-band polarization- and incident-angle independent low profile metamaterial absorber
- Radiation pressure of a hybrid bianisotropic chiral structure
- Improving the automatic target recognition algorithm’s accuracy through an examination of the different time-frequency representations and data augmentation
- On the effect of array size on the radar cross section reduction bandwidth of checkerboard metasurfaces
- Analysis and synthesis of L- and T-shaped flexible compact microstrip antennas using regression-based machine learning approaches
- Novel implantable antenna with miniaturized footprint size for wideband biomedical telemetry applications
- Circular shape monopole antenna with modified ground plane proclaiming SWB characteristics
- Miniaturized wideband implantable slotted loop antenna for biotelemetry applications
- A 156 GHz high-power doubler-embedded cross-coupled local oscillator in 55 nm CMOS technology
