大家好，我正在寻找创建评估板的意见。
我的目标如下。
我有一个装在QFN封装中的器件，它安装在评估板上。
该器件具有200欧姆差分输入和输出端口。
频率范围为10 MHz至500 MHz。
我只能访问ENA（事实上是E5071B）。
我需要在评估板的SMA连接器上进行测量时，为器件生成S参数（单端和平衡）。
我计划使用接地共面波导，路径中可能有50到100次转换。
以下是我的一些想法：TRL不实用，因为Line必须是40英寸长。
SOLT因为它是低频，只需创建SHORT（接地通孔或0欧姆SMD接地），OPEN，LOAD（50欧姆SMD接地）和一条线。
适配器表征除非有我遗漏的东西，否则我需要探测一个连接是不切实际的。
建模使用ADS去嵌入设备。
两个想法：想法1.创建一个直线。
我必须找到它，但ADS确实有办法从1个文件生成2个S参数文件。
限制是：M用于S参数测量数据。
L表示左S参数数据。
R代表正确的S参数数据。
S22L = S11R S21L = S21R S12L = S12R这是一组递归方程。
想法2.为SMA连接器查找或创建S参数文件。
创建一个模拟连接器，50欧姆传输线，转换和100欧姆传输线的
电路。
将此与去嵌入元素（NEG2）一起使用。
我确实浏览了
论坛，但每个人似乎都在谈论高频率。
我正在寻找有关上述方法的利弊的意见。
如果我错过了解决方案，请告诉我。
如果我错过了关于这个主题的上一篇文章，我道歉了。
在此先感谢您的帮助。
此致，Mike Virostko集成设备技术
以上来自于谷歌翻译
以下为原文
Hello All,
I am looking for opinions for crea
ting an evaluation board. My goal is the following. I have a device, in a QFN package that is mounted to a evaluation board. This device has 200 ohm differential input and output ports. The frequency range is 10 MHz to 500 MHz. I only have access to an ENA (E5071B in fact). I need to generate the S-parameters (both single ended and balanced) to the device while making the measurement at the SMA connectors of the evaluation board. I plan to use grounded coplanar waveguide and there could be a 50 to 100 transition in the path. Here are few ideas I have:
TRL
Not practical since the Line must be 40 inch long.
SOLT
Because it is low frequency, just create the SHORT (grounded via or 0 ohm SMD to ground), OPEN, LOAD (50 ohms SMD to ground) and a line.
Adapter Characterization
Unless there is something I am missing I would need a probe for one connection which is impractical.
Modeling
Use ADS to de-embed the device. Two ideas:
Idea 1. Create a through line. I would have to find it, but ADS did have a way to generate 2 S-parameters files from 1 file. The restrictions are:
M is used for the S-parameter measured data.
L is for the left S-parameter data.
R is for the right S-parameter data.
S22L = S11R
S21L = S21R
S12L = S12R
This is a recursive set of equations.
Idea 2. Find or create a S-parameter file for the SMA connector. Create a circuit that models the connector, 50 ohms transmission line, transition, and 100 ohm transmission line. Use this with the de-embedding element (NEG2).
I did browse the forum but everyone seems to be talking high frequency. I am looking for opinions on the pros and cons of the above approaches. If I missed a solution, please let me know. If I missed a previous post on this subject, I apologized.
Thanks in advance for you help.
Sincerely,
Mike Virostko
Integrated Device Technology
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