[1] C Caloz, T Itoh. Application of the transmission line theory of left-handed (LH) materials to the realization of a microstrip “LH line”[C]. IEEE Antennas and Propagation Society International Symposium, 2002, 2: 412-415.
[2] Wang Haixia, Lü Yinghua, Zhang Hongxin, et al.. Study on double incidence left-handed material composed of double Z-shaped metal strips [J]. Acta Physica Sinica, 2011, 60(3): 0341011.
[4] Liang Lanju, Yan Xin, Yao Jianquan, et al.. Two-dimensional left-handed material based on parallel metallic double rods in terahertz wave [J]. Acta Optica Sinica, 2012, 32(3): 0316001.
[5] Zhou Fukun, Yi Qiang, Luo Xingfang. A kind of S-type structure of left-handed materials for 60 GHz communication [J]. Acta Photonica Sinica, 2013, 42(2): 423-426.
[6] G V Eleftheriades. A generalized negative-refractive-index transmission-line (NRI-TL) metamaterial for dual-band and quad-band applications [J]. IEEE Microwave and Wireless Components Letters, 2007, 17(6): 415-417.
[7] Du Qiujiao, Liu Jinsong, Wang Kejia, et al.. Dual-band Terahertz left-handed metamaterial with fishnet structure [J]. Chin Phys Lett, 2011, 28(1): 0142011.
[8] Li Minhua, Yang Helin, Lin Hai, et al.. Design, measurement, and characterization of dual-band left-handed metamaterials with combined elements [J]. Microwave and Optical Technology Letters, 2013, 55(3): 493-497.
[9] Zhong Jingping, Huang Yongjun, Wen Guangjun, et al.. Tunable dual-band negative refractive index metamaterial consisting of ferrites and SRR-wire [J]. Procedia Engineering, 2012, 29(7): 797-801.
[10] Chen Cheng, Yang Rongcao, Xue Wenrui, et al.. Design of a novel dual-band left-handed material [J]. Acta Optica Sinica, 2012, 32(s1): s116006.
[11] Chen Hongsheng, Ran Lixin, Huangfu Jiangtao, et al.. Left-handed materials composed of only S-shaped resonators [J]. Phys Rev E, 2004, 70(5): 0576051.
[12] Chen Hongsheng, Ran Lixin, Huangfu Jiangtao, et al.. Metamaterial exhibiting left-handed properties over multiple frequency bands [J]. J Appl Phys, 2004, 96(9): 5338-5340.
[13] Wang Dongxing, Ran Lixin, Wu Baeian, et al.. Multi-frequency resonator based on dual-band S-shaped left-handed material [J]. Opt Express, 2006, 14(25): 12288-12294.
[14] D R Smith, D C Vier, T H Koschny, et al.. Electromagnetic parameter retrieval from inhomogeneous metamaterials [J]. Phys Rev E, 2005, 71(3): 0366171.