Calculations and measurements of wire and/or split-ring negative index media

被引：38

作者：

Rachford, FJ ^{[1
]}

Smith, DL ^{[1
]}

Loschialpo, PF ^{[1
]}

Forester, DW ^{[1
]}

机构：

[1] USN, Res Lab, Washington, DC 20375 USA

来源：

PHYSICAL REVIEW E | 2002年 / 66卷 / 03期

关键词：

D O I：

10.1103/PhysRevE.66.036613

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：

Broadband calculations (70 MHz-20 GHz) and measurements (2-15 GHz) were performed on planar stacks of two-dimensional double-split rings arrays interspersed with arrays of thin wires. Recent work on similar composite structures infers a negative index of refraction (n<0) over a narrow frequency range. We have performed finite-difference time-domain (FDTD) calculations on various combinations of ring geometries, wire arrays, and stack spacings. Excellent agreement was obtained between FDTD simulations and our measured transmission spectra. Examining the FDTD time progression of fields we find regions of both negative and positive indices as well as an inverse Doppler effect.

引用

页数：5

共 12 条

[1]

FITZGERALD R, 2001, PHYS TODAY, V54, P17

[2]

KYRIAZIDOU CA, 1999, IEEE ANT PROP SOC IN, V3, P1912

[3] Low frequency plasmons in thin-wire structures [J].