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嗨,我想在ADS(2011年和2015年)模拟微变压器。
我对设置端口感到困惑。 我有4端口变压器和。 我想要提取S参数。 我应该将4端口转换为2端口(初级线圈中的端口(1,2)和次级线圈中的端口(3,4))。我认为我有3种方法可以做到这一点。 1次使用差分端口(如组(1,2)作为一个端口)。 2接地端口2和4(基板下覆盖地面)3-用于端口(作为手动)和图表显示窗口通过多端口方程转换4端口到2端口(如将SD11定义为新S11并且它等于SD11 = 0.5 *(S11-S13-S31 + S33))我模拟所有这些并且我有不同的结果。 哪一个在论文中更正确,更常见? 我知道在制造端口2和4将接地,但我不知道如何正确地接地端口。 谢谢1.jpg25.4 KB3.jpg19.9 KB2(3).png4.3 KBads1.PNG50.1 KB 以上来自于谷歌翻译 以下为原文 hi I want to simulation micro transformer in ADS (2011 and 2015). I am confused about set Ports. I have 4-Port transformer and . I want extract S-parameter. i should convert 4 port to 2-port ( port (1,2) in primary coil and port(3,4) in secondary coil ) .and i think i have 3 way to do it. 1-use differential port( like group (1,2) as one port ). 2-ground port 2 and 4 (cover ground under substrate) 3- use for port (as manual) and in plot display windows by multiport equation convert 4-port to 2-port (like define SD11 as new S11 and it is equal SD11=0.5*(S11-S13-S31+S33) ) i simulate all of them and i have different result. which one is more correct and more common in papers? I know that in fabrication port 2 and 4 will be grounded but i don't know how to ground that port correctly. thanks 附件
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如果使用过孔进行建模以连接到底部接地,过孔和它们的相互耦合将包含在结果中。
在大多数情况下,这是不希望的,因为实际上不存在通孔。 更好的解决方案是将引脚放置在线圈的两个“末端”上。 然后可以根据需要连接这些,用于差分操作或接地或任何您需要的。 通常的应用案例是差分模拟,但如果您以差分方式定义Momentum端口(使用显式(+)和( - )引脚),那么您只能得到理想的差分激励/终端的结果。 共模将“看到”差分(+)( - )端口的开路。 此外,关于将(+)( - )显式接地端口重新分组为其他配置:结果是2端口数据,并且不可能将其重新配置为其他信号/接地组合。 这是我经常看到RFIC设计师的一个错误,所以我不久前写了一个关于该主题的appnote:http://muehlhaus.com/support/ads-application-notes/em_line_ground要覆盖差分和共模,你需要4 - 端口数据,带4个引脚 - > 4个端口,具有共同的全局接地。 以上来自于谷歌翻译 以下为原文 If you model with vias to connect to the bottom ground, the vias and their mutual coupling are included in results. In most cases, this is not desired, because that via does not exist in reality. The better solution is to place pins on both "ends" of the coils. These can then be connected as needed, for differential operation or grounded or whatever you need. The usual application case is to simulate differentially, but if you define the Momentum ports differentially (with explicit (+) and (-) pins) then you get results for ideal differential excitation/termination only. Common mode will "see" an open circuit at differential (+) (-) ports. Also, regarding the re-grouping of (+)(-) explicit ground ports into other configurations: the results are 2-port data and it is not possible to re-configure this for other signal/ground combinations. This is a mistake I often see with RFIC designers, so I wrote an appnote on that topic a while ago: http://muehlhaus.com/support/ads-application-notes/em_line_ground To cover differential and common mode, you need 4-port data, with 4 pins -> 4 ports with common global ground. |
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