N9923A具有时域选项和匹配阻抗

嗨，大家好，我们只是通过时域选项获得N9923A VNA。
我发现这个选项非常有趣，我试图用它来匹配916MHz的某些芯片天线的Z.
我按照安捷伦的视频介绍，如何使用TD选项激活FFT消除不良电缆，连接器等的影响，然后在最后一个开放电缆效应之间设置门控时间，将其连接到天线馈电点
天线峰值后的“第一个最小值或最小值”。
我调整了速度因子（因为我没有所用电缆的特性）来适应VNA报告的距离以及电缆，连接器等尺寸的实际测量。然后取消激活FFT并让门
接通，并使用3个标记M1（902MHz），M2（916MHz）和M3（932MHz）测量频带之间的史密斯圆图（以及对数格式的回波损耗）中的Z，以覆盖中心和完整的频率带。
我希望有人使用这个选项让我知道我正在做什么是正确的，如果我应该得到相同的结果，就好像我按照要求的“单一”Open或Short方法校准仪器一样
在此校准方法期间通过仪器。
提前感谢EGCEdited：EGC于2012年12月28日晚上7:30



     以下为原文

  Hi Guys,

We just get a N9923A VNA with the time Domain option. I found this option very interesting and I'm trying to use it to match the Z of some chip antenna at 916MHz. I follow the video introduction of Agilent about how to eliminate the effect of bad cable, connectors, etc using the TD option activating the FFT and then seting the Gate time betwen the last open cable effect just where it will be connected to the antenna feeding point and "the first minimum or valey" after the peak from my antenna. I adjusted the Velocity Factor (because I do not have the characteristics for the cable used) to fit the distance reported by the VNA with the real measuring of the dimensions of the cable, connector etc. Then de-activate the FFT and let the Gate ON, and measure the Z in the Smith Chart (And Return Loss in Log format) between the frequency band using 3 markers M1 at 902MHz, M2 at 916MHz and M3 at 932MHz to cover the center and complete freq band.
I would like for someone who had used this option to let me know if what I'm doing is right and if I'm supposed to have the same results as if I calibrate the instrument with a "single" Open or Short method as requested by the instrument during this calibration method.

Thanks in advance

EGC

Edited by: EGC on Dec 28, 2012 7:30 PM