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A new material classification of lossy metamaterials
Author(s) -
Lee Dong Hyun,
Park Wee Sang
Publication year - 2011
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.25687
Subject(s) - metamaterial , lossy compression , sign (mathematics) , microwave , materials science , physics , mathematics , computer science , optoelectronics , telecommunications , mathematical analysis , statistics
The propagation constant is extended and derived for lossy metamaterials in which ε r ′< 0 and μ r ′> 0 (ENG), ε r ′> 0 and μ r ′< 0 (MNG), and ε r ′< 0 and μ r ′< 0 (DNG).Regardless of the magnitudes of ε r ″and μ r ″ , DPS materials are a RH medium and DNG materials are a LH medium. However, SNG materials become a RH medium when the sign of (ε r ′× μ r ″+ ε r ″× μ r ′ ) is positive and a LH medium when the sign is negative. A new diagram is proposed to classify any lossy metamaterial into either RH or LH medium. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 53:445–447, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.25687