Variable Inductance Filtering Module for Dynamic EMI Suppression

The patent applies the dynamics principle by making the inductor's inductance value variable rather than fixed. The inductance changes dynamically with the current flowing through it, allowing the filtering module to adapt to different current conditions. This is achieved through a magnetic core design where the inductance varies as a function of the current, enabling the filtering bandwidth and center frequency to be adjusted automatically based on the operating current.

The patent implements parameter changes by varying the inductance value of the inductor based on the current flowing through it. The inductance parameter is made dependent on the current, allowing the filtering characteristics (bandwidth and center frequency) to change with operating conditions. This parameter variation enables the filter to maintain effectiveness across different current levels without requiring manual adjustment or complex control circuits.

The patent applies universality by designing the inductor to serve multiple functions: it provides both the filtering function and the automatic adaptation to different current conditions. The same inductor structure that provides inductance also inherently varies its inductance with current, eliminating the need for separate adjustment mechanisms. The filtering module uses this universal inductor along with capacitors to achieve both filtering and adaptive behavior without requiring additional complex components.

The patent implements self-service by designing the inductor to automatically adjust its inductance based on the current flowing through it, without requiring external control signals or additional active components. The inductor's magnetic core structure inherently causes the inductance to vary with current, allowing the filtering module to self-adapt to different operating conditions. This self-adjusting mechanism reduces the need for complex control circuits or additional adjustment components.