有限元仿真模式下天线阵的二维模式只能获得一个有效馈电端口的增益结果

谢谢。
至少我不必无休止地寻找它。
虽然我必须说看到如何在“远场切割”标签中切割图案并不是那么有用，但是没有办法以2D形式显示切割。
但是你能否帮助确认在FTDT模式下，是否可以获得组合天线阵列的2D增益图？
我在“结果”窗口中提到（没有进入高级可视化），没有可用于FEM模拟，并且似乎模式结果似乎是一次激活一个馈送，即仅单模激励。
至少如果这是真的，我可以说服我们的管理层，我们需要FTDT许可才能对我们的设计有更多的定量观点。
观察3D图案，对图案其他部分的增益没有全面的定量知识是不够的。



     以下为原文

  thanks.  at least I dont have to look for it endlessly.  

Although I must say it is not so useful seeing how the pattern is cut in the "far field cut" tab, but no means to display the cut in a 2D form.

But could you help confirm if in FTDT mode, one could get a 2D gain plot for a combined antenna array?  I mentioned that in the Results window (without going into the advanced visualization), there is none available for FEM simulation and it is always that it seems the pattern results is for one feed active at a time, i.e. only single mode excitation.

At least if this is true, I could convince our management that we need an FTDT license to have a more quantitative view on our design.  Viewing the 3D pattern, with no full quantitative knowledge on the gain at the other parts of the pattern isnt sufficient.

FEM相对于FDTD的一个优点是，您可以获得多端口s参数数据，而不会增加太多的仿真时间开销。
在FDTD中，s参数的模拟时间几乎与端口数成线性比例。
这是因为每个端口必须一次启用一个，以计算另一个端口的s参数的功率（入射/反射）。
通过启用端口＃1，您可以获得S11，S12，S13，...，S1n。
这适用于其他端口，当您启用所有端口时，会产生完整的N x N矩阵s参数，但模拟时间会根据端口数量进行缩放。
但是，如果您对s参数不感兴趣，但对多端口激励下的天线增益或波传播不感兴趣，则这是单次模拟而非多次模拟。
您可以关闭s参数并启用所有端口，如果您想这样做，所有端口都兴奋，以产生正确的增益等等。
是的，您在结果窗口中看到的值是所有端口都兴奋的值。
请参阅下面的EM Application Center链接中的示例。
[http://edocs.soco.agilent.com/display/eesofapps/8x16+Patch+Array+Antenna]希望这会有所帮助。
HeeSoo LEE



     以下为原文

  One of advantages of FEM over FDTD is that you can get multi-port s-parameter data without adding much of simulation time overhead. In FDTD, the simulation time for s-parameters is almost linearly proportional to the number of ports. This is because each port has to be enabled one at a time to calculate the power (incident/reflected) at the other port for s-parameters. By enabling the port #1, you can get S11, S12, S13, ..., S1n. This applies to the other ports resulting in full N x N matrix of s-parameters when you enabled all ports but the simulation time scales based on the number of ports. 

However, if you are not interested in for s-parameters but antenna gain or wave propagating under multi-port excitation, this is a single simulation not multiple simulations. You can turn off s-parameters and enable all ports if you want to do that where all ports are excited to produce the correct gain and so on. 

Yes, the value what you see in the result window is the value with all ports are excited. 

See an example from EM Application Center link below. 

[http://edocs.soco.agilent.com/display/eesofapps/8x16+Patch+Array+Antenna] 

Hope this helps. 

HeeSoo LEE