Compensation apparatus and inductor-based apparatus

An inductor-based apparatus, for receiving an input signal from a function circuit, comprising:

• a first inductor, coupled to the function circuit through a first terminal with a first voltage and a second terminal with a second voltage, wherein a first current flows through the first inductor;
• a second inductor, coupled between a third terminal with a third voltage and a fourth terminal with a fourth voltage, wherein a second current flowing through the second inductor is related to the first current;
• and
• a current source circuit, for outputting the second current to compensate frequency drift of the input signal.

A compensation apparatus, comprising:

• a primary circuit, for providing a first voltage difference and a first current, comprising:
• a function circuit, for generating an input signal;
• and
• a first inductor, coupled to the function circuit, wherein the first current flows through the first inductor;
• and
• a compensation circuit, comprising:
• a second inductor, wherein a second current flowing through the second inductor is related to the first voltage difference;
• and
• a current source circuit, for outputting the second current to compensate frequency drift of the input signal, wherein the primary circuit and the compensation circuit are coupled via the first inductor and the second inductor.