Filter circuit incorporating a micro-electromechanical capacitor

Abstract

A method for filtering an electrical signal. The invention includes the steps of rotating a conductive disc (105) about an axis (135), applying a magnetic field (205) to the conductive disc (105) in a direction that is generally parallel to the axis of rotation (135), electrically connecting a first and second conductor (215, 220) to the disc (105) at radially spaced locations thereon, and connecting the first and second conductors (215, 220) in at least one of a series and parallel configuration. The conductive disc (105) can be formed in a recess (130) in a substrate (125) which can have a printed circuit or an integrated circuit. The substrate (125) can consist of a semiconductor or ceramic, such as a low temperature co-fired ceramic. The first and second conductors (215, 220) and the conductive disc (105) rotating in the magnetic field (205) can define an electro-mechanical capacitor (100), which can be used for capacitively filtering a signal. An inductor also can be provided.

Dependencies are inferred from the claim text.