Mimcap Type A couldn't be identified as cell in Magic / Klayout

[angelinaaw]

@msaligane @amisapta15 Hello, This is the issue for MIMCAP Type A couldn’t be identified as a cell in Magic or KLayout. Because of this, we can’t generate the full LVS netlist for our LPF layout. The netlist always shows fewer devices since the capacitor is not defined—it only appears as metal layers (MET2 and MET3) connected by multiple vias. These MIMCAPs come from the glayout library.

We’re not sure how to create a PCell for MIMCAP Type A, and if we switch to MIMCAP Type B, we’re worried that the capacitance and size will be different. One idea we’re considering is to generate only the parasitic extraction (PEX) file, then manually add the detected capacitance into the LVS layout so that LVS can be completed together with PEX.

Attached is our .gds file of the LPF using MIMCAP Type A, along with the zip file.

LPF_LVS.zip

LPF_REVISE.ipynb

Thanks!

[LuighiV]

Hi @angelinaaw,
Please consider checking this PR #54 I have uploaded yesterday related to this issue.
Hope that could help.

Thanks,
Luighi