对中心频率为225GHz的谐振环结构(SRR)带阻滤波器进行了仿真分析和实验研究.采用HFSS仿真模拟技术,研究了SRR开口宽度、线宽、加载介质以及极化角度等相关参量对其谐振特性的影响.结果表明,该带阻滤波器的频率响应特性对场极化角度的敏感性很低,具有较好的稳定性;实验中测试到样品的中心频率为225.6GHz,与仿真结果有一定的偏差.通过进一步分析发现,影响频率偏移的主要因素是样品的实际尺寸偏小和介质的介电常数偏大,导致实际测试响应频率小于设计值.
参考文献
| [1] | Veselago V G .The electrodynamics of substances with simultaneously negative values of ε and μ[J].Soviet Physics Uspekhi,1968,10(04):509. |
| [2] | Pendry J.B.;Robbins D.J.;Stewart W.J.;Holden A.J. .Magnetism from conductors and enhanced nonlinear phenomena[J].IEEE Transactions on Microwave Theory and Techniques,1999(11):2075-2084. |
| [3] | Pendry JB. .Negative refraction makes a perfect lens[J].Physical review letters,2000(18):3966-3969. |
| [4] | Ricardo Marques;Francisco Mesa;Jesus Martel;Francisco Medina .Comparative Analysis of Edge- and Broadside-Coupled Split Ring Resonators for Metamaterial Design—Theory and Experiments[J].IEEE Transactions on Antennas and Propagation,2003(10):2572-2581. |
| [5] | Smith DR.;Vier DC.;Nemat-Nasser SC.;Schultz S.;Padilla WJ. .Composite medium with simultaneously negative permeability and permittivity[J].Physical review letters,2000(18):4184-4187. |
| [6] | Yen T J;Padilla W J;Fang N et al.Terahertz magnetic response from artificial materials[J].Science,2004,303(5663):1494. |
| [7] | Azad A K;Dai J;Zhang W .Transmission properties of terahertz pulses through subwavelength double split-riug resonators[J].Optics Letters,2006,31(05):634. |
| [8] | Chen, HT;Padilla, WJ;Cich, MJ;Azad, AK;Averitt, RD;Taylor, AJ .A metamaterial solid-state terahertz phase modulator[J].Nature photonics,2009(3):148-151. |
| [9] | Tao H;Landy N I;Bingham C M et al.A metamaterial absorber for the terahertz regime:Design,fabrication and characterization[J].Optics Express,2008,16(10):7181. |
| [10] | Chen H T;O'Hara J F;Azad A K et al.Experimental demonstration of frequency-agile terahertz metamaterial[J].Nat Photonics,2008,2(05):295. |
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