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.s2p file is two port s-parameter data from low frequency to high frequency, including s11,s12, s21 and s22, which may be generated by network analyzer or any EM simulator like SONNET and Momentum. You can find the explaination for the 2-port s-parameter in any microwave textbook. Given a two port device which you don't know the real circuit model, you use network analyzer to measure 2-port s-parameter, and then you can use the result in HP ads to do both frequency response and transient analysis simulation in your circuits.
以上就是一个.s2p文件部分内容。“！”后内容为注示部分，“#”后内容为正文部分。
# HZ S MA R 50
# HZ （频率）S MA （四组s参数） R 50（50欧姆系统）
比如我已经知道某个器件的spice模型，在ads里面有没有能够直接导入这个模型的操作，总不会spice模型的元件参数，都要我一个一个输入吧？请大家帮我！
可以直接导入。
此主题相关图片如下：
我从器件厂商那儿得到的spice模型文件是：T506.TXT
***************************************************************
* SIEMENS Discrete & RF Semiconductors
* GUMMEL-POON MODEL CHIP PARAMETERS IN SPICE 2G6 SYNTAX
* VALID UP TO 6 GHZ
* >>> T506 <<< (CHIP)
* Extracted by SIEMENS Semiconductor Group HL HF SI CDB
* (C) 1998 SIEMENS AG
* Version 1.0 December 1998
***************************************************************
.MODEL T506 NPN(
+ IS =1.5E-17 NF =1 NR =1
+ ISE=2.5E-14 NE =2 ISC=2E-14
+ NC =2 BF =235 BR =1.5
+ VAF=25 VAR=2 IKF=0.4
+ IKR=0.01 RB =11 RBM=7.5
+ RE =0.6 RC =7.6 CJE=2.35E-13
+ VJE=0.958 MJE=0.335 CJC=9.3E-14
+ VJC=0.661 MJC=0.236 CJS=0
+ VJS=0.75 MJS=0.333 FC=0.5
+ XCJC=1 TF=1.7E-12 TR=5E-08
+ XTF=10 ITF=0.7 VTF=5
+ PTF=50 XTB=-0.25 XTI=0.035
+ EG=1.11)
***************************************************************
在ads中新建一个schematic，选择file，选择import，就是上面贴得图了！
RF Microelectronics, by Razavi
CMOS radio frequency integrated circuits design, by Thomos Lee |
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发表于 2006-12-4 10:57:36
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