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https://designers-guide.org/forum/YaBB.pl Modeling >> Behavioral Models >> SpectreRF to Simulink (S parameters)? https://designers-guide.org/forum/YaBB.pl?num=1465287339 Message started by exp on Jun 7th, 2016, 1:15am |
Title: SpectreRF to Simulink (S parameters)? Post by exp on Jun 7th, 2016, 1:15am Hello, I've the following intricate problem: I have a transistor-level design of an RC integrator (OTA in feedback) and I want to test what errors are introduced due to nonlinearity. Problems:
My idea would be: Characterize the circuit with SpectreRF: Sweep all input frequencies, sweep input power and get output power (amplitude and phase). There would be a 2D array which would give me the complex gain for a particular input power and frequency. A Simulink block (to be found) would interpolate between them. Then for another Simulink block I just keep the smallest two power variables in the model and use linear interpolation: This should then constitute a perfectly linear but frequency dependent model. Now sending the same data through the 2 Simulink blocks should give me the difference that is only caused by the nonlinearity and I can directly obtain an NMSE value. Can I use SpectreRF to export frequency dependent nonlinearity behavior? Are S-parameters what I am looking for? How to? Any ideas for the Simulink part? |
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