如何找到T2,3的模型

我遇到了另一个问题......实际上我必须模拟恩智浦应用笔记中给出的功率放大器。我已经接受了恩智浦提供的schamtic ......在schamtic中你看到有两种类型的平衡 - 不平衡变换器使用。
输入中的一个平衡 - 不平衡变换器是T1和其他两个平衡 - 不平衡变换器在平行T2，T3 ......现在我发现T1输入平衡 - 不平衡变压器的模型在另一个附加图片中显示为巴伦1 ..但我找不到任何模型
平衡 - 不平衡变换器T2，T3 ..实际上在巴伦1中，四条线路中的一条接地......这是从不平衡但是T2,3，没有导线接地。
它也必须是铁氧体磁芯同轴。
所以PLZ指导我如何找到T2,3的模型。而且我已经附上了我从inernet获得的ADS schamtic pic，这实际上并不是由我制作的，我刚刚帮助它，我也从互联网上获得了它
。实际上是为了参考..几乎我必须在ADS中制作相同的schamtic，实际上我必须使用ADS schamtic图片中使用的两个balus我已经上传..还如何相应地给出参数。例如，如果必须做4：1
同轴巴伦有一些长度和50或25欧姆...所以首先帮助我如何在ADS中找到它，然后如何给出相应的参数，如（4：1,55mm，50等）。
我正在使用ADS2008 ...非常感谢... ADS baluns.png15.7 KBapplication_note.png50.3 KB



     以下为原文

  i came across another problem..actually i have to simulate the power amplifier given in the NXP application note .i have attched the schamtic given by NXP...here in the schamtic you see there are two types of baluns used .
one balun in input which is T1 and other two baluns in parallal T2,T3 ....now i found the model for T1 input balun which is shown in another attached picture that is balun 1..but i can not find any model for the balun T2,T3..
actually in balun 1,one of the four lines is grounded...this is from unbalanced but T2,3 ,no wire is grounded.
also it must be ferrite core coxial .
so plz guide me how to find models for T2,3 .and also i have attched ADS schamtic pic which i have got from inernet,this is not actually made by me,i have just uplodd it for help and i also got it from internet.its actually for refernce..almost i have to make same schamtic in ADS ,actually i have to use the both balus used in ADS schamtic picture i have uploadded..
also how to give paramets accordingly .eg if have to do 4:1 coax balun having some length and 50 or 25 ohm...so first help me how to find it in ADS and then how to give parameters accordingly like (4:1,55mm,50 etc).
i am using ADS2008...
THANKYOU SO MUCH...   
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• 9_1258616622.jpg280.9 KB
• ADS baluns.png15.7 KB
• application_note.png50.3 KB