• 易迪拓培训,专注于微波、射频、天线设计工程师的培养
首页 > ADS > ADS FAQ > IM2 calculation with ADS

IM2 calculation with ADS

录入:edatop.com    点击:
Hi

I was trying to use ADS to check if I understand IM2 (2nd order Intermodulation) calculation correctly or not but the result confused me with ADS simulation.

In theory with 2-tone test (same amplitude for f1 and f2),
IM2@(f2-f1) & IM2@(f2+f1) = 2*pin(f1) - IIP2 = 2*pin(f2) - IIP2
IM2@DC = IM2@(f2-f1) +3dB = IM2@(f2+f1)+ 3dB
Am I correct for the above formula?
(Reference: rfdesign.com/mag/404rfdf3.pdf)

From the ADS simulation it gives me quite different results.
m1 and m2 are different level, and m3 is not 3dB above m1.

Could you please advise where goes wrong?
Did I configure ADS simulation parameters correctly?

Thanks a lot for your help.

mmm....is it because your amplifier is Ideal and is not modeled to be non-linear? that's my guess....

Did you also calculate the third order products? And then add them to the second order products where they land on the same frequency?

申明:网友回复良莠不齐,仅供参考。如需专业帮助,请学习易迪拓培训专家讲授的ADS视频培训课程

上一篇:ADS Layout Help needed
下一篇:ads iv curve

ADS培训课程推荐详情>>

  网站地图