Method of using varainductor having ground and floating planes

A method of using a phase locked loop (PLL), the method comprising:

• receiving a reference frequency and a feedback frequency at a phase frequency detector;
• generating a control signal based on a difference between the reference frequency and the feedback frequency;
• controlling an oscillator circuit based on the control signal, wherein the controlling the oscillator circuit comprises:
• operating a plurality of switches in response to the control signal, wherein operating the plurality of switches comprises selectively electrically connecting a first ground plane to a first floating plane, wherein the first floating plane is between the first ground plane and the signal line, and the first floating plane is a same distance from a substrate as the first ground plane.

A method of designing a varainductor, the method comprising:

• selecting an inductance and a Q factor;
• determining a number of switches for selectively electrically connecting a floating plane and a ground plane;
• determining a distance between the floating plane and the ground plane;
• and
• setting a first distance between a substrate and the ground plane to be equal to a second distance between the substrate and the floating plane.