Variabel kapacitans, lågpassfilter samt mikroelektromekaniskt omkopplingsarrangemang

摘要

The present invention refers to a variable capacitor comprising a first conductive layer, a second conductive layer and a semiconductor layer, the first and second layers being arranged to be displaced relative to each other under the influence of an electrostatically generated force. The semiconductor layer constitutes a voltage generator, which when exposed to a radiation produces a voltage for charging the first and second conductive layers and induces the electrostatically generated force.