Filter circuit and adjustable inductor thereof

Abstract

A filter circuit and an adjustable inductor thereof are related to the filter circuit, which includes a power terminal, an output terminal, a power wiring, and the adjustable inductor. The power terminal is configured to receive a working power. The output terminal is configured to output the working power. The power wiring is coupled between the power terminal and the output terminal. The adjustable inductor is electrically connected between the power terminal and a ground terminal, and the adjustable inductor is configured to eliminate noise on the power wiring. The adjustable inductor includes a first transconductor and a second transconductor. The first transconductor and the second transconductor have opposite transconductance phase, and is electrically connected between two terminals of the first transconductor.

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