Title :
Characteristics of Electrically Small Spiral Resonator Metamaterial With Electric and Magnetic Responses
Author :
Cheng Zhu ; Jing-Jing Ma ; Hui-Qing Zhai ; Long Li ; Chang-Hong Liang
Author_Institution :
Nat. Key Lab. of Sci. & Technol. on Antennas & Microwaves, Xidian Univ., Xi´an, China
fDate :
7/4/1905 12:00:00 AM
Abstract :
In this letter, we investigate the design, fabrication, and measurement of square spiral resonator (SR) metamaterial. The simulation, experiment, and the parameter retrieval results all validate that the one-arm SR only has a magnetic response, while multiarm (including two-arm, three-arm and four-arm) SR have a magnetic and an electric response in two different frequency regions, respectively. Moreover, compared to some previous traditional designs of metamaterial with double responses, SR have the advantages of small electrical dimension and exhibit different electric/magnetic responses corresponding to different number of arms under a fixed unit length. Theoretical analysis corresponds very well with experimental results.
Keywords :
electromagnetic devices; microwave metamaterials; microwave resonators; double response metamaterial; electric responses; electrically small spiral resonator metamaterial; fixed unit length; frequency regions; magnetic responses; multiarm SR; one-arm SR; parameter retrieval; small electrical dimension; square spiral resonator metamaterial design; square spiral resonator metamaterial fabrication; square spiral resonator metamaterial measurement; Magnetic materials; Metamaterials; Permeability; Scattering parameters; Electric response (ER); magnetic response (MR); metamaterials; spiral resonator (SR);
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2012.2236878
