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王璨

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[问答]

如何为MIMO应用设置E5071C

嗨,我想用E5071C测量我的2x2和4x4天线的VSWR,回波损耗,谐振频率。
我想知道如何为MIMO应用设置E5071C。
有设置图吗?
有关网络分析的MIMO天线测量的具体应用说明?
我想同时测试我的2x2和4x4天线。
这是我的MIMO天线表征。
我想验证每个天线是否会对彼此造成干扰,因为MIMO的切换速度比单天线快得多。
MIMO使用多个天线来满足从更宽角度接收信号的空间分集。
希望你能帮忙。

以上来自于谷歌翻译


     以下为原文

  Hi,

I want to measure VSWR, return loss, resonant frequency of my 2x2 and 4x4 antenna using E5071C.

I like to know how to setup E5071C for MIMO application. Is there a setup diagram?  

Any specific application note for MIMO antenna measurement on network analysis?

I want to test my 2x2 and 4x4 antennas simultaneously.  

This is for my MIMO antenna characterization.

I want to verify whether each antenna will cause interferences to one another as the switching speed for MIMO is much faster then single antenna.

MIMO uses multiple antenna to cater for spatial diversity receiving signal from wider angle.  

Hope you can help.  

回帖(5)

孔德羲

2018-12-18 16:37:31
考虑到MIMO测量,它实际上取决于您要确定的内容。
如果它只是天线的VSWR,那么没问题。
只要可以将切换设置为允许测量所有路径的状态,假设天线不是非线性的,则根本不需要使所有天线都有效以确定任何干扰效应。
但是可能需要您对结果进行一些数学计算,以确定您想要查看的具体特征。
这类似于无源设备上的差分测量问题,已被清楚地证明能够使所有需要的测量一次刺激一个端口并正确地组合结果。
但是对于详细的答案,您最好发布一个测试天线的图表,显示连接,开关状态,要测量的内容以及预期的品质因数(例如,天线1的VSWR)
利用与信号驱动天线1)异相90度的信号同时驱动天线2。

以上来自于谷歌翻译


     以下为原文

  With repect to MIMO measurements, it really depends on what you are trying to determine.

If it is simply the VSWR of an antenna, then no problem.  It is not at all necessary to have all antennas active to determine any interference effect as long as the swtiching can be set to a state that allows all the paths to be measured, presuming the antennas are not acting non-linear.  But it may require you to do some math on the results to determine the specific characteristics that you want to see.

This is similar to the problem of differential measurments, on passive devices, which has been clearly demonstrated to be able to make all the needed measurements stimulating one port at a time and properly combining the results.

But for a detailed answer, you would be best to post a diagram of you antenna-under-test showing the connections, the switching states, what is to be measured and what is the expected figure of merit (e.g., VSWR of antenna 1 when antenna 2 is driven at the same time with a signal 90 degrees out of phase with the signal driving antenna 1).
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王璨

2018-12-18 16:43:30

嗨乔尔博士,谢谢你的信息。
目前我有Agilent 8753D网络分析仪,30 kHz至3 GHz已经过时。
我的MIMO 2x2天线测量是否足够?
如果8753D无法完成这项工作,我想要获得E5071C。
是否有2x2 MIMO的通用设置图?
我现在没有带有现有连接的实际MIMO天线测试。
希望你能帮忙。

以上来自于谷歌翻译


     以下为原文

  Hi Dr Joel,

Thanks for the info.

Currently I have Agilent 8753D Network Analyzer, 30 kHz to 3 GHz which is already obsolete.

Is it sufficient for my MIMO 2x2 antenna measurement? I'm thinking to get E5071C if 8753D cannot do the job.

Is there any general setup diagram for 2x2 MIMO?

I does not have an actual MIMO antenna-under-test with the connections on-hand now.

Hope you can help.
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孔德羲

2018-12-18 16:57:03

我不太熟悉2x2 mimo测试的要求,所以我不能真的建议你。
如果您想出一个测试场景(如“测量一个天线的S11,同时在0到180度的相位驱动,具有相同的幅度”),那么我们当然可以告诉您需要设置什么才能完成
测量。
但您需要确定我们的测量要求才能提供帮助

以上来自于谷歌翻译


     以下为原文

  I'm not so familiar with the requirements for 2x2 mimo test, so I can't really advise you.

If you come up with a test scenario (as in "measure the S11 of one antenna while driving both at phases from 0 to 180 degrees, with the same amplitude"), then we can certainly tell you what the setup is needed to do the measurement.  But you will need to determine the measurement requirements for us to help
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王璨

2018-12-18 17:11:17

谢谢Joel博士,没问题,我理解。
我的2端口8753D可以完成MIMO天线特性测量吗?
或者我需要一个4端口E5071C?

以上来自于谷歌翻译


     以下为原文

  Thanks Dr Joel, 

No problem, I understand.

Can my 2 port 8753D do the job for my MIMO antenna characteristics measurement?

Or I need a 4 port E5071C?
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