The value of the inductance is determined by what
The method of reducing the Q value can be to increase the resistance of the winding or to use the magnetic core with large power consumption
The quality factor of the inductor is related to the DC resistance of the coil conductor, the dielectric loss of the coil frame, and the loss caused by the iron core and the shield.
It was also reduced the Q value of the inductor, the purpose is to avoid high frequency resonance / gain is too large