A microstrip tunable negative refractive index metamaterial and phase shifter

被引：14
|
作者：
He, P. [1 ]
Gao, J. [1 ]
Marinis, C. T. [1 ]
Parimi, P. V. [1 ,2 ]
Vittoria, C. [1 ]
Harris, V. G. [1 ]
机构：
[1] Northeastern Univ, Dept Elect & Comp Engn, Ctr Microwave Magnet Mat & Integrated Circuits, Boston, MA 02115 USA
[2] Northeastern Univ, Dept Phys, Boston, MA 02115 USA
来源：
APPLIED PHYSICS LETTERS | 2008年 / 93卷 / 19期
基金：
美国国家科学基金会;
关键词：
copper; garnets; iron alloys; metamaterials; optical phase shifters; plasmonics; refractive index; yttrium alloys;
D O I：
10.1063/1.3025303
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
A tunable negative refractive index metamaterial and miniature phase shifter have been designed and fabricated in a microstrip configuration for applications in radio frequency integrated circuits. The metamaterial consists of plasmonic copper wires and yttrium iron garnet slabs having a low insertion loss of 5 dB at the center of the transmission band. The yttrium iron garnet material enables the magnetic field tuning of the negative refractive index in a dynamic frequency band from 7.0 to 11.0 GHz. The insertion phase can be tuned by 45 degrees continuously by varying the bias field from 3.8 to 4.6 kOe at 9.0 GHz.
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页数：3
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