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您好,我有一个关于使用来自ENA 5071C的S2P块和S1P块匹配网络的问题。
我需要在CPW线路上将天线与LC网络相匹配。 为了使电缆固定,我使用ecal后使用端口扩展。 对于S1P文件,这很好,但对于S2P文件,似乎更改了史密斯图表参考。 设置如下:馈送到cpw线以匹配天线这是我使用的过程。 从天线我得到S1P块,端口扩展开启端口1(所有线路返回到馈送断开连接)。 在此之后,我通过在馈送和匹配上放置电缆来测量CPW的使用端口扩展。 我缩短了两边并为两个端口使用了自动校准端口扩展。 接下来,在将电缆固定并使其成为直通传输之后,我抓住S2P块。 当我尝试将其放入模拟工具时,RL和史密斯图表与实际测量结果不匹配。 我想知道将S2P块的两个端口扩展都打开是不正确的? 任何和所有的帮助将不胜感激。 谢谢,GrantEdited:gk于2013年12月12日下午5:57 以上来自于谷歌翻译 以下为原文 Hello, I have a question regarding matching networks using an S2P block and S1P block from ENA 5071C. I need to match an antenna with an LC network along a CPW line. To dembed the cable I use the port extensions after using an ecal. For the S1P file this is fine however for a S2P file it seems the smith chart reference is changed. The setup is like this: feed to cpw line to match to antenna Here is the process I use. From the antenna I get the S1P block with the port extensions on for port 1(with all lines going back to feed disconnected). After this I measure the use port extensions for the CPW by putting a cable on the feed and at the match. I short both sides and use an auto cal port extension for both ports. Next I grab the S2P block after fixing the cable short and making it a thru transmission. When I try to put this into a simulation tool the RL and smith chart do not match to what the real measurements are. I am wondering if it is not correct to put both port extensions on for the S2P block? Any and all help would be appreciated. Thanks, Grant Edited by: gk on Dec 12, 2013 5:57 PM |
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我不清楚您的设置,图纸或图片会有所帮助。
但通常情况下,您必须有一个S2P文件用于任何去嵌入。 您无法解嵌s1p文件,因为去嵌入会消除VNA和DUT之间网络的影响,因此网络必须有2个端口(一个连接到VNA,另一个连接到DUT) 。 将测量值与模型进行比较的一个方面通常是模型与实际DUT不匹配,这是由于建模技术的限制,DUT制造的限制或外部效应,尤其是在消声室中没有进行的天线测量中。 以上来自于谷歌翻译 以下为原文 I unclear on your setup, a drawing or a picture would help. But normally, you must have an S2P file for any de-embedding. You can't de-embed an s1p file, as de-embedding removes the effects of a network BETWEEN the VNA and the DUT, thus the network must have 2 ports (one to connect to the VNA and one to connect to the DUT). One aspect of comparing measurements to models is often the model does not match the actual DUT due to limitions of the modelling technique, limiations of the DUT manuafacturing, or external effects especially in antenna measuemements that are not done in an anechoic chamber. |
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