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首页> 外文期刊>Radio Science >Novel composite right-/left-handed transmission lines using fractal geometry and compact microwave devices application
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Novel composite right-/left-handed transmission lines using fractal geometry and compact microwave devices application

机译：利用分形几何和紧凑型微波设备的新型复合右手/左手传输线

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摘要

In this paper, novel electrically small resonant-type composite right-/left-handed transmission lines (CRLH TLs) combining fractal geometry are proposed and systematically exploited. Two sets of planar CRLH cell structure are involved including the proposed one based on cascaded complementary single split ring resonator (CCSSRR) and improved one based on complementary split ring resonators (CSRRs). Fractal perturbation in these CRLH TLs is from the point of super compactness. The left-handed (LH) electromagnetic wave propagation characteristic and miniaturization principle are investigated in depth by electrical simulation, EM simulation and finally demonstrated by effective constitutive EM parameters. To illustrate possible application, a dual-band BPF covered satellite DMB band and WiMAX band, and a monoband branch-line coupler covered GSM band are designed, fabricated, and measured. Consistent results between full-wave simulation and measurement have confirmed the design concept. Measurement results indicate that the fractal perturbation is a good strategy for further miniaturization, enhanced selectivity and maintenance of good in-band performance in both designs especially for the coupler which achieves a comparable 81% size reduction relative to its conventional counterpart.
机译：在本文中，提出并系统地研究了结合分形几何形状的新型电小谐振型复合右手/左手传输线（CRLH TL）。涉及两组平面CRLH单元结构，其中包括基于级联互补单裂环谐振器（CCSSRR）提出的一种和基于互补裂环谐振器（CSRR）提出的改进的一种。这些CRLH TL中的分形扰动是从超紧凑的角度出发的。通过电仿真，电磁仿真对左手电磁波的传播特性和小型化原理进行了深入研究，最后通过有效的本构电磁参数进行了验证。为了说明可能的应用，设计，制造和测量了双频带BPF覆盖的卫星DMB频带和WiMAX频带，以及单频带分支线耦合器覆盖的GSM频带。全波仿真和测量之间的一致结果已经证实了设计概念。测量结果表明，在两种设计中，分形摄动是进一步小型化，增强选择性和维持良好带内性能的良好策略，特别是对于耦合器而言，相对于传统耦合器而言，其尺寸可减小81％。

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