At the first step, DC resistance on the inductor from ADS PDK and the one from Momentum simulation are way different.
On the other hand the calculated DC resistance matches with the one from Momentum simulation.
Based on the above, we can judge that Momentum simulation is more accurate.
But the problem is:
I am using UTM (ultra thick metal, thickness=4.6um) which its sheet resistance is not written in the document. Only sheet resistance of M6 with thinner metal with the thickness of 0.99um is written.
I thought since the material should be same, sheet resistance of the UTM should be 4.6 times of that for thinner M6.
Am I right?