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Newbie level 4
Deal all,
I am doing S parameter simulation of a smic 40nm PGS inductor in ADS momentum, But the result of the momentum don't match the S parameter obtained from cadence spectre which uses the model provided by the smic foundary,in fact , they differ much,I did many experiments, but still can't get a matched result, Can anyone help me, what may be the cause? thanks . Below are the results from momentu and spectre respectively, for obvious, I put them on the same matlab figure. Attached is the slm file i use in momentum, for they are about 40 layers in smic 40nm technology, but momentum can't tackle so many, So I averaged the dielectric layers between every two metal layer with a mean permitivity(Er).
![spe_sim_s12.png spe_sim_s12.png](https://www.edaboard.com/data/attachments/28/28138-4211afdee8edc13d7900e0621bbf35e5.jpg)
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CONFIG]86071[/ATTACH]![rf_ind_single_s12_mag.png rf_ind_single_s12_mag.png](https://www.edaboard.com/data/attachments/28/28141-d8e12e074f10b61039d33488b76946a3.jpg)
![rf_ind_single_s11_mag.png rf_ind_single_s11_mag.png](https://www.edaboard.com/data/attachments/28/28142-851ef89415e3e30316020022f0edf0d0.jpg)
I am doing S parameter simulation of a smic 40nm PGS inductor in ADS momentum, But the result of the momentum don't match the S parameter obtained from cadence spectre which uses the model provided by the smic foundary,in fact , they differ much,I did many experiments, but still can't get a matched result, Can anyone help me, what may be the cause? thanks . Below are the results from momentu and spectre respectively, for obvious, I put them on the same matlab figure. Attached is the slm file i use in momentum, for they are about 40 layers in smic 40nm technology, but momentum can't tackle so many, So I averaged the dielectric layers between every two metal layer with a mean permitivity(Er).
![spe_sim_s12.png spe_sim_s12.png](https://www.edaboard.com/data/attachments/28/28138-4211afdee8edc13d7900e0621bbf35e5.jpg)
![mom_sim.png mom_sim.png](https://www.edaboard.com/data/attachments/28/28139-0c42d702f340f7b99facbd5edee191c4.jpg)
![Inductor_simulation_in_mom.png Inductor_simulation_in_mom.png](https://www.edaboard.com/data/attachments/28/28151-5569a2c17dcfc9506b3de12c147ce747.jpg)
![rf_ind_single_s12_mag.png rf_ind_single_s12_mag.png](https://www.edaboard.com/data/attachments/28/28141-d8e12e074f10b61039d33488b76946a3.jpg)
![rf_ind_single_s11_mag.png rf_ind_single_s11_mag.png](https://www.edaboard.com/data/attachments/28/28142-851ef89415e3e30316020022f0edf0d0.jpg)
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