@Leonardo Gomes you can try nutmeg scripting to get linear SP from ngspice simulation. See https://qucs-s-help.readthedocs.io/en/latest/RF.html About the inductors, you can use ASITIC to generate a layout for sky130. See https://github.com/yrrapt/inductor-generator best if you can perform EM sim on it. Posted in #ieee-sscs-dc-21q3