[建模]本征模求解

在文献里看到给定结构尺寸的spp波导，可以直接由cst求出本征模，从而得到色散曲线，跪求详细操作方法，大家集思广益。 u/<ZGW(&s(  
这是文献里提到的色散曲线 2D(sA  

图片:QQ截图20141025105943.jpg

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这是在cst里已画出的单元结构 ?V}ub>J/=  

图片:QQ截图20141025110241.gif

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关于边界设置等，文章也已给出：The dispersion curve of the composite grating structure is analysed using the commercial software CST Microwave  &
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Studio in which the unit cell shown in figure 1(a) is located in an outer air box. The air box has the same size as the periodic cell in the x direction and large enough sizes in the y and z directions. For the air box, the boundaries in the x direction should be set as master and slave boundaries (i.e. the periodic boundary), and the other boundaries in the y and z directions are set as PEC. For a given phase difference between the master and slave boundaries, we can calculate an eigenfrequency using the Eigen-mode solver. If we change the phase difference from 0◦ to 180◦, we can calculate all eigenfrequencies. Then, the dispersion relation can be obtained. Furthermore, the dispersion curve can be directly output from the CST software %K+hG=3O  
when we set the phase difference as a variable and sweep it from 0◦ to 180◦. YZ]}l%e  
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能不能把文献题目发给我看看，我试一试。最近刚好也在搞这块。

spp 2012 JoPD Dual-band spoof surface plasmon polaritons based on composite-periodic gratings

cdgzs:能不能把文献题目发给我看看，我试一试。最近刚好也在搞这块。 (2014-10-25 21:35)  4XVwi<)  

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spp 2012 JoPD Dual-band spoof surface plasmon polaritons based on composite-periodic gratings

suforever:spp 2012 JoPD Dual-band spoof surface plasmon polaritons based on composite-periodic gratings (2014-10-26 10:18)  *$R9'Yo}F  

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目测此图不是此文里的！

zhlouiang:目测此图不是此文里的！ (2014-10-27 09:22)  $JBb] v8_  

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spp 2014 LPR Broadband and high-efficiency conversion from guided waves to spoof surface plasmon polaritons M1 o@v0  
两篇文章一回事，都是同一类结构。

用CST微波工作室的本征模求解器+周期边界（相差为参数）+参数扫描（扫描相差）即可

就是怎么求解色散曲线的问题吧。首先说明下我用的是CST2012。 +KP&D.wIo  
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（1）在设置边界条件时，当设置了周期边界后，就可以在Boundary Conditions->Phase Shift/Scan Angles中设置相应方向的相位差变量，最好设成phase。这样就不需要在后面自己修改宏命令了。 gm: xtN  
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（2）打开Eigenmode solver设置好基本参数，然后打开Parameter  Sweep在Sequences中添加扫描变量phase，范围自己定（取值范围0-180）。 7U&<{U<  
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（3）Macros->Solver->E-solver->Define Slow Wave userdefined Watch，点击“是”，提示成功后进入E-solver的Parameter  Sweep中可以发现Result Watch中多了项userdefined，直接点击Start扫参完成后即可在1D Results中看到结果。 1w 9zl}  
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大家多交流，希望对你有用！谢谢！

本征模求解要用CST本征模求解器做

cdgzs:就是怎么求解色散曲线的问题吧。首先说明下我用的是CST2012。
（1）在设置边界条件时，当设置了周期边界后，就可以在Boundary Conditions->Phase Shift/Scan Angles中设置相应方向的相位差变量，最好设成phase。这样就不需要在后面自己修改宏命令了。
（2）打开Eigenmode sol .. (2014-10-27 22:21)  &(~"OD  

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