© The Institution of Engineering and Technology
Starting from the electric field integral equation (EFIE), it is shown how, for quasi-static cloaking (i.e. zero scattered fields), the EFIE can be reduced to classical Kirchhoff's current law (KCL). The KCL, if considered according to all-dielectric or metal-dielectric structures, is demonstrated to realise devices based on plasmonic or mantle cloaking, respectively. The KCL generalises scattering cancellation theory for arbitrary shape devices in homogeneous backgrounds and it can be extended as a local cloaking condition beyond quasi-static regime. A cloaking device can be seen as a node (i.e. no current source or sink) that ensures all current densities to be compensated even for more complicated low scattering devices.
References
-
-
1)
-
4. Chen, P.-Y., Alù, A.: ‘Mantle cloaking using thin patterned metasurfaces’, Phys. Rev. B, 2011, 84, pp. 205110 (doi: 10.1103/PhysRevB.84.205110).
-
2)
-
5. Alitalo, P., Valagiannopoulos, C.A.: ‘Demonstration of electromagnetic cloaking of conducting object by dielectric material cover’, Electron. Lett., 2012, 48, (17), pp. 1056–1057 (doi: 10.1049/el.2012.2094).
-
3)
-
10. Hastings, D.: ‘Dielectric rod support tuned by included metal wires for reduction of scattering’, Trans. Antennas Propag., 1968, 16, (3), pp. 350–351 (doi: 10.1109/TAP.1968.1139201).
-
4)
-
11. Amjadi, S.M., Sarabandi, K.: ‘Mutual coupling mitigation in broadband multiple-antenna communication systems using feedforward technique’, Trans. Antennas Propag., 2016, 64, (5), pp. 1642–1652 (doi: 10.1109/TAP.2016.2535101).
-
5)
-
7. Danaeifar, M., Granpayeh, N., Booket, M.R.: ‘Optical invisibility of cylindrical structures and homogeneity effect on scattering cancellation method’, Electron. Lett., 2016, 52, (1), pp. 29–31 (doi: 10.1049/el.2015.2604).
-
6)
-
1. Bucci, O.M., Isernia, T.: ‘Electromagnetic inverse scattering: retrievable information and measurement strategies’, Radio Sci., 1997, 32, (6), pp. 2123–2137 (doi: 10.1029/97RS01826).
-
7)
-
4. Alù, A., Engheta, N.: ‘Achieving transparency with plasmonic and metamaterial coatings’, Phys. Rev. E., 2005, 72, pp. 016623, (doi: 10.1103/PhysRevE.72.016623).
-
8)
-
1. Pendry, J.B., Schurig, D., Smith, D.R.: ‘Controlling electromagnetic fields’, Science, 2006, 312, (5781), pp. 1780–1782, (doi: 10.1126/science.1125907).
-
9)
-
8. Ishimaru, A.: ‘Electromagnetic wave propagation, radiation and scattering’ (Prentice-Hall, Englewood Cliffs, NJ, 1991), pp. 365–369.
-
10)
-
6. Matekovits, L., Bird, T.: ‘Width-modulated microstrip-line based mantle cloaks for thin single- and multiple cylinders’, Trans. Antennas and Propagat., 2014, 62, (5), pp. 2606–2615 (doi: 10.1109/TAP.2014.2307587).
-
11)
-
9. Ramsey, A.S.: ‘Electricity and magnetism: an introduction to the mathematical theory’ (Cambridge University Press, Cambridge, UK, 1937), p. 108.
http://iet.metastore.ingenta.com/content/journals/10.1049/el.2016.2682
Related content
content/journals/10.1049/el.2016.2682
pub_keyword,iet_inspecKeyword,pub_concept
6
6