In this work we investigate the dispersion and radiation properties of leaky waves on metamaterial grounded slabs. A simple analysis of the dispersion equation of TE and TM waves supported by such structures reveals that leaky waves of only the proper type exist when double-negative metamaterials are employed, while proper or improper leaky waves exist in single-negative grounded slabs, depending both on which constitutive parameter is negative and on TE or TM polarization. Numerical results on specific structures are provided that illustrate the backward nature of radiation from the proper leaky waves and show the behavior of the frequency scan through broadside as the metamaterial layer changes its constitutive parameters.
Baccarelli, P., Galli, A. (2004). The nature of radiation from leaky waves on single- and double-negative metamaterial grounded slabs. In 2004 IEEE MITT-S International Microwave Symposium Digest (pp.309-312). NEW YORK : IEEE, 345 E 47TH ST, NEW YORK, NY 10017 USA [10.1109/mwsym.2004.1335879].
The nature of radiation from leaky waves on single- and double-negative metamaterial grounded slabs
BACCARELLI, PAOLO;GALLI, ALESSANDRO
2004-01-01
Abstract
In this work we investigate the dispersion and radiation properties of leaky waves on metamaterial grounded slabs. A simple analysis of the dispersion equation of TE and TM waves supported by such structures reveals that leaky waves of only the proper type exist when double-negative metamaterials are employed, while proper or improper leaky waves exist in single-negative grounded slabs, depending both on which constitutive parameter is negative and on TE or TM polarization. Numerical results on specific structures are provided that illustrate the backward nature of radiation from the proper leaky waves and show the behavior of the frequency scan through broadside as the metamaterial layer changes its constitutive parameters.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
