Hello, I should design an oscillator just consists of inductors and capacitors . the circuit should not have any resistors. also, It has 4 MOSFETs instead of Not Gate. the lenghth of each inductor should be low, but the number of them are high. (as the schemes have shown below) I designed and tested in every situation that I thought. The problem is that there is not resonable scheme after the simulation. Any help will be appreciated. Please see attached.