Patent ID: 9209784
Filing Date: 2015-12-08
Classification: H03H,H03K

Abstract:
1. A switchable capacitive element comprising: a field effect transistor (FET) device stack that is operable in an open state and in a closed state, the FET device stack comprising a plurality of FET devices coupled in series to form the FET device stack; a first capacitor coupled to a first end of the FET device stack and being coupled in series with the FET device stack; and a second capacitor coupled to a second end of the FET device stack opposite the first end of the FET device stack and being coupled in series with the FET device stack; a third capacitor coupled in series with the first capacitor so that the first capacitor and the third capacitor provide a series capacitance; wherein the second capacitor has an other capacitance, wherein the other capacitance of the second capacitor is higher than the series capacitance of the first capacitor and the third capacitor.