(a) Circuit scheme including LC tank connected to the time-varying loss. (b) real and (c) imaginary parts of eigenfrequency versus modulation frequency f_m, where the loss average is zero. (d) Time-domain signal capacitance’s voltage v_c (t), which shows the linear growth at EPD. (e) real and (f) imaginary parts of eigenfrequency versus modulation frequency f_m, where the loss average is positive (G works as a lossy component in average) (g) Time-domain signal capacitance voltage v_c (t) is decaying related to the positive imaginary part of eigenfrequency at EPD. (h) real and (i) imaginary parts of eigenfrequency versus modulation frequency f_m, where the loss average is negative (G works as a gain component in average) (j) Time-domain signal capacitance voltage v₁ (t) is rising related to the negative imaginary part of eigenfrequency at EPD. In all time-domain simulation the capacitor has an initial condition of v_c (0⁻) = 50mV.