Fundamental Electromagnetic Theory
Our group is pushing the frontiers of electromagnetic theory particularly pertaining to the emerging field of metamaterials. Our experimental work is always backed by rigorous electromagnetic and network theory. We are constantly pushing the envelop of electromagentic theory. Some highlights from our recent work include,
a) The resolution of the long standing problem regarding the independent excitation of "complex modes" in guided-wave structures and now in negative-index metamaterials [1].
b) The proof that the effective-medium perspective of 2D loaded transmission-line dense networks (metamaterials) is equivalent to the multi-mode perspective of multi-conductor transmission lines [2].
d) The demonstration of the subtle connection between the classical theory of antenna super-directivity by S. Schelkunoff and the theory of super-oscillations [4].
[2] R. Islam, M. Zedler and G.V. Eleftheriades, "Modal analysis and wave propagation in finite 2D transmission-line metamaterials", IEEE Trans. on Antennas and Propagat., vol. 59, no. 5, pp. 1562-1570, May 2011.
[3] F. Elek and G.V. Eleftheriades, "Dispersion analysis of Sievenpiper's shielded structure using multi-conductor transmission-line theory", IEEE Microwave and Wireless Components Letters, vol. 14, no. 9, pp. 434-436, Sept. 2004.
[4] A. Wong and G.V. Eleftheriades, "Adaptation of Schellkunoff superdirective antenna theory for the realization of superoscillatory antenna arrays", IEEE Antennas and Wireless Propagation Letters, vol. 9, pp. 315-318, April 2010.
c) The introduction for the first time of multi-conductor transmission line theory for the analysis of metamaterial structures [3].
[1] R. Islam and G.V. Eleftheriades, "On the independence of the excitation of complex modes in isotropic structures", IEEE Trans. Antennas and Propagat., vol. 58, no. 5, pp. 1567-1578, May 2010.
