Frequency dependence of magnetic flux profile in the presence of metamaterials for wireless power transfer

Boopalan, G.; Subramaniam, C. K.

doi:10.1109/iscas.2014.6865665

Cited by 3 publications

(2 citation statements)

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“…By considering the thickness of the structure as 24 mm, the maximum refractive index "n 0 " and minimum refractive index "n(x)" values are found to be 1.82 and 1.276, respectively. For the above-mentioned specifications, it is found that the three-dimensional array is formed by 45 × 35 × 8 unit cells each of size 3 mm 3 . The three-dimensional CSR array is shown in Figure 5.…”

Section: Gradient Refractive Index Structurementioning

confidence: 99%

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Energy Transfer Using Gradient Index Metamaterial

Ganapathy

Krishnaswamy

2018

International Journal of Antennas and Propagation

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The gradient refractive index structure in this paper is used to increase the quantum of energy transfer. This is done by improving the directive gain of the pyramidal horn antenna at a frequency of 10 GHz. A three-dimensional array of closed square rings is placed in front of the horn antenna aperture to form a gradient refractive index structure. This structure increases the directive gain by 1.6 dB as compared to that of the conventional horn antenna. The structure nearly doubles the wireless power transfer quantum between the transmitter and the receiver when placed at both ends. The increase in the directivity is achieved by converting the spherical wave emanating from the horn to a plane wave once it passes through the structure. This transformation is realized by the gradient refractive index structure being placed perpendicular to the direction of propagation. The gradient refractive index is constructed by changing the dimensions of a closed square ring placed in the unit cell of the array. The change in the refractive index gives rise to an improvement of the half power beam width and side lobe level compared to that of the normal horn. The design and simulation were done using CST Studio software.

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Section: Gradient Refractive Index Structurementioning

confidence: 99%

“…In the near-field domain, inductive loops are used for energy transfer [1]. By the introduction of metamaterial in between the loops, the distance of energy transfer can be increased [2][3][4]. Most of the work in the far field is carried out in the microwave region [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%