Transmission-line analysis of ε-near-zero-filled narrow channels

被引:126
作者
Alu, Andrea [1 ]
Silveirinha, Mario G. [1 ,2 ]
Engheta, Nader [1 ]
机构
[1] Univ Penn, Dept Elect & Syst Engn, Philadelphia, PA 19104 USA
[2] Univ Coimbra, Inst Telecomun, Dept Elect Engn, P-3030 Coimbra, Portugal
来源
PHYSICAL REVIEW E | 2008年 / 78卷 / 01期
关键词
D O I
10.1103/PhysRevE.78.016604
中图分类号
O35 [流体力学]; O53 [等离子体物理学];
学科分类号
070204 ; 080103 ; 080704 ;
摘要
Following our recent interest in metamaterial-based devices supporting resonant tunneling, energy squeezing, and supercoupling through narrow waveguide channels and bends, here we analyze the fundamental physical mechanisms behind this phenomenon using a transmission-line model. These theoretical findings extend our theory, allowing us to take fully into account frequency dispersion and losses and revealing the substantial differences between this unique tunneling phenomenon and higher-frequency Fabry-Perot resonances. Moreover, they represent the foundations for other possibilities to realize tunneling through arbitrary waveguide bends, both in E and H planes of polarization, waveguide connections, and sharp abruptions and to obtain analogous effects with geometries arguably simpler to realize.
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页数:10
相关论文
共 27 条
[1]   Achieving transparency with plasmonic and metamaterial coatings -: art. no. 016623 [J].
Alù, A ;
Engheta, N .
PHYSICAL REVIEW E, 2005, 72 (01)
[2]   Pairing an epsilon-negative slab with a mu-negative slab:: Resonance, tunneling and transparency [J].
Alù, A ;
Engheta, N .
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, 2003, 51 (10) :2558-2571
[3]   Epsilon-near-zero metamaterials and electromagnetic sources:: Tailoring the radiation phase pattern [J].
Alu, Andrea ;
Silveirinha, Mario G. ;
Salandrino, Alessandro ;
Engheta, Nader .
PHYSICAL REVIEW B, 2007, 75 (15)
[4]   Metamaterial covers over a small aperture [J].
Alu, Andrea ;
Bilotti, Filiberto ;
Engheta, Nader ;
Vegni, Lucio .
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, 2006, 54 (06) :1632-1643
[5]   Effects of leaky-wave propagation in metamaterial grounded slabs excited by a dipole source [J].
Baccarelli, P ;
Burghignoli, P ;
Frezza, F ;
Galli, A ;
Lampariello, P ;
Lovat, G ;
Paulotto, S .
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, 2005, 53 (01) :32-44
[6]   Near-perfect tunneling and amplification of evanescent electromagnetic waves in a waveguide filled by a metamaterial:: Theory and experiments -: art. no. 075116 [J].
Baena, JD ;
Jelinek, L ;
Marqués, R ;
Medina, F .
PHYSICAL REVIEW B, 2005, 72 (07)
[7]   LEAKY-WAVE ANTENNA USING AN ARTIFICIAL DIELECTRIC MEDIUM [J].
BAHL, IJ ;
GUPTA, KC .
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, 1974, AP22 (01) :119-122
[8]   ARTIFICIAL DIELECTRICS HAVING REFRACTIVE INDICES LESS THAN UNITY [J].
BROWN, J .
PROCEEDINGS OF THE INSTITUTION OF ELECTRICAL ENGINEERS-LONDON, 1953, 100 (05) :51-62
[9]  
Collin R. E., 2000, FDN MICROWAVE ENG
[10]  
Collin R. E., 1991, FIELD THEORY GUIDED, P600