New Invention Profile
| Publication No: | IN202311017859 [India] | Application No: | IN202311017859 |
| Title: | FLEXIBLE METALO-DIELECTRIC METASURFACE | ||
| Publication Date: | 20-09-2024 | File Date: | 16-03-2023 |
| Inventor(s): | Modi Keshav Samrat; Singh Satya Pratap; Tiwari Umesh; Sinha Ravindra Kumar | ||
| IPC Classification: | H01Q 15/00, G02B 1/00, C04B 35/468, B29C 48/305, H01G 4/30 | ||
| Abstract: | The present invention relates to a metasurface device, apparatus and its characteristics. The apparatus includes a high permittivity substrate of barium titanate sandwich between two similar polyurethane polymer sheet layers. Each layer consists of radially placed non-magnetic copper strips over the polyurethane polymer sheet. The apparatus is configured to redistribute the magnetic and electric components of incident electromagnetic field waves in radiofrequency wavelengths over its surface. |
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| Startup Options: | Advantages: 1. The metasurface is designed for 3T (Tesla) MRI machine, which have operating frequency of 127 MHz. The operating frequency is important parameter for designing of the metasurface, since the metasurface whose fundamental resonance frequency matches the operating frequency of the MRI machine will work efficiently in redistributing and enhancing the near magnetic field. 2. The design, shape, size, constituent of the metasurface structure is such that its fundamental resonance frequency matches the operating frequency of the 3T MRI machine. So that in resonance condition when metasurface interacts with the incident electromagnetic field, the resultant near magnetic field distribution is desirably high. 3. The copper strips are arranged in radially (in circular fashion). The near magnetic field distribution above the centre portion of metasurface is large due to radial arrangement of the copper strips because of the cumulative effect of each individual copper strips compare to the linear arrangement of copper strips. 4. High permittivity dielectric is used for substrate. The advantage of using high permittivity dielectric is that it can confine and retain high field energy, thus maximum enhancement of near magnetic field. In our proposed structure, we used Barium Titanate (BaTiO3) high dielectric permittivity (>900) material as substrate. 5. The other advantage is that due to the high permittivity the thickness of the thus designed metasurface is thin compare to the low permittivity material, hence metasurface will be compact. |
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