[问答]

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

问答对人有帮助，内容完整，我也想知道答案 0 我正在尝试一个天线阵列（4元件天线阵列）的教程，但我们的许可仅适用于FEM。虽然我可以很好地在FEM模式下运行模拟，但我一次只能获得一个有效馈电端口的增益结果，即辐射模式仅适用于一次激活的一个端口而不是整个4馈电。在高级可视化模式中，我可以进行多次激发，在那里我可以看到整体模式，但是我无法查看2D绘图以获得旁瓣上的测量结果。有没有办法在FEM模式下查看整体辐射方向图的2D图？提前致谢。以上来自于谷歌翻译以下为原文 I'm trying out a tutorial for an antenna array (4-element antenna array) but our license is only for FEM. While I could run the simulation on FEM mode just fine, I could only get the gain result with one active feed port at a time, i.e. the radiation pattern is only for one port active at a time and not for the entire 4 feed. In the advanced visualization mode I could do a multiple excitation where I could see the overall pattern, but I could not view a 2D plot to get the measurements on the sidelobes for example. Is there a way to view a 2D plot of the overall radiation pattern under FEM mode? thanks in advance. 0
2019-3-22 10:39:39　　评论淘帖0 邀请回答您可以邀请以下用户，快速回答问题 × kingnet_52040 该类别下有 195 个回答。邀请回答 60user7 该类别下有 81 个回答。邀请回答蓝色冰汐该类别下有 45 个回答。邀请回答醉狼工作室该类别下有 41 个回答。邀请回答 ianwhoani 该类别下有 30 个回答。邀请回答 dkhwakd 该类别下有 25 个回答。邀请回答 aaabbb567 该类别下有 23 个回答。邀请回答 e08506806 该类别下有 20 个回答。邀请回答 szzjfyp 该类别下有 18 个回答。邀请回答 sonia87 该类别下有 16 个回答。邀请回答 ningee 该类别下有 16 个回答。邀请回答 zouqinxiang 该类别下有 15 个回答。邀请回答 xj5548 该类别下有 15 个回答。邀请回答 derek88 该类别下有 14 个回答。邀请回答 daichuangs 该类别下有 14 个回答。邀请回答 hzmbs2016 该类别下有 12 个回答。邀请回答 JST2006 该类别下有 12 个回答。邀请回答 www037 该类别下有 11 个回答。邀请回答 ToGoodSoft 该类别下有 11 个回答。邀请回答 juujwfdf 该类别下有 11 个回答。邀请回答举报折剑青相关推荐 • 基于应用于方向回溯天线阵的分形双极化天线仿真和测试 1846 • 什么是电大尺寸天线罩与波导裂缝阵一体化仿真？ 2587 • 采用ANSYS HFSS软件实现WiFi天线设计 3955 • 如何使用HFSS设计5G天线阵列？ 856 • 求一种有限元分析中PCBA的简化建模方法 1437 • 一种采用线极化方式的小型化GPS锥面共形天线阵设计 1719 • 一种基于AMDS的螺旋天线仿真设计 1417 • 非辐射边共面馈电的单层矩形贴片天线的仿真及实验 906 • 射频仿真系统的天线阵列怎么校准？ 2459 • 怎么设计频扫天线阵？ 1695 2个回答

答案对人有帮助，有参考价值 0 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。以上来自于谷歌翻译以下为原文 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.

2019-3-22 11:06:22 评论举报折剑青

答案对人有帮助，有参考价值 0 biao66 发表于 2019-3-22 11:36 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。 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 以上来自于谷歌翻译以下为原文 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

2019-3-22 11:15:34 评论举报鄢蓉