Department of Electrical and Electronics Engineering

Permanent URI for this collectionhttp://localhost:4000/handle/123456789/1925

Browse

Filters

2016 - 20204

Settings

Subject: search.filters.subject.Medical Body Area Network (MBAN)

Search Results

Now showing 1 - 4 of 4
  • No Thumbnail Available
    Item
    Miniaturized Slot-loaded Mushroom EBG Cell for MBAN and Wi-Fi Bands
    (IEEE, 2020) Rano, Dinesh
    Systematic design approach for two new types of EBG cells operating in the Medical Body Area Network (MBAN) and ISM bands are reported. The proposed EBG cells make use of the conventional mushroom and slot loaded EBG cells. The proposed techniques utilize tuning of slot dimensions to achieve miniaturization. A reduction of more than 20% is obtained using the presented designs when compared to the mushroom cell. Furthermore, an algorithm that combines the LC lumped circuit model and dispersion diagram of the EBG cells to expedite the design and analysis is developed. To experimentally validate the design feasibility and hence the bandgap property of the proposed cells, an array of 3x5 unit cells is prototyped. The measured results show good agreement with the simulated results at the desired band.
  • No Thumbnail Available
    Item
    A modified interdigital EBG reflector for wireless body area network applications
    (Wiley, 2018-12) Rano, Dinesh
    A modified, compact, and via-less interdigital electromagnetic band gap cell intended for wearable application at medical body area network (MBAN), and Wi-Fi bands is reported in this article. The reflection phase of the proposed EBG unit cell is then investigated to design a reflector consisting of 3 × 2 array of EBG cells for an efficient radiation of a planar monopole antenna. The size and shape of the EBG unit cell has been designed in such a way that it achieves 0° reflection phase with minimum dimension of 14.3 and 15.34 mm along x-axis and y-axis, respectively. Subsequently, the surface wave rejection ability of the EBG incorporated ground plane is also studied and presented in this article. A planar monopole antenna incorporating the proposed EBG reflector at MBAN frequency exhibits gain, and efficiency of 6.4 dB, and 95%, respectively, and has net dimension of 34 mm × 55 mm × 4.67 mm along x-axis, y-axis, and z-axis, respectively. Finally, specific absorption rate (SAR) analysis carried out for one layer, homogenous model, and three-layer, heterogeneous model, shows a considerable reduction in SAR values for 0.5 W of power fed to the antenna. The effectiveness of the proposed approach is demonstrated through good agreement between the simulated and the experimental results.
  • No Thumbnail Available
    Item
    Design and analysis of wearable patch antenna array for MBAN applications
    (IEEE, 2016) Rano, Dinesh
    Design idea of wearable rectangular patch antenna and its array for MBAN (2.36 - 2.4 GHz) applications are proposed in this paper. Microstrip line with quarter wave transformer is used for feeding purpose. Polyamide lossy (Nylon-6) is used as dielectric substrate whereas the conductive parts i.e. patch and ground plane consists of nickel - copper - nickel coating on the textile substrate. The presence of highly conductive coating on substrate (i.e., surface resistance of 0.1 ohms/m 2 ) aids in the reduction of losses. Five layer model consisting of bottom textile, air gap, skin, fat and bone is considered here. Since the wearable antennas are body worn devices effect of body curvature is also considered by conforming the antennas on cylindrical surface.
  • No Thumbnail Available
    Item
    Extremely compact EBG-backed antenna for smartwatch applications in medical body area network
    (IET, 2019-03) Rano, Dinesh
    This paper presents design of a compact interdigital electromagnetic band gap unit cell (IDE) for wearable applications in the medical body area network (MBAN) band. The uniqueness of the proposed cell is in its ability to achieve lower resonant frequency in spite of very compact size of 14.3 mm × 14.5 mm. The cell has adjacent fingers connected in such a way that the net inductance contributed by the metallic strips increases and this aids in the reduction of resonant frequency. An equivalent lumped circuit model supports the analysis of the proposed cell. The evaluation of the developed model is assessed by comparing the reflection phase response obtained from the circuit model and full wave analysis. The proposed design, even though slightly asymmetric, possess polarisation stability and this has been validated using the reflection phase parameter for a plane wave polarised along x -and y-axes. Subsequently, a reflector consisting of 2 × 2 IDE-unit cell to be integrated with monopole antenna of overall size 36 mm × 38 mm × 3.12 mm is designed. The design exhibits a very good agreement between the experimental and the simulated results whereby it is able to provide gain and efficiency of 5.3 dB and 85% respectively at the MBAN frequency.