Patent ID: 8767373
Filing Date: 2014-07-01
Classification: H01G

Abstract:
1. An electronic device having an operation temperature range, the electronic device comprising: a tunable capacitor comprising a first electrode, a second electrode, and a dielectric arranged between the first electrode and the second electrode, wherein the dielectric comprises dielectric material having a value of a relative dielectric constant varying at least within the operation temperature range; a temperature varying means being thermally coupled to the tunable capacitor for controlling the temperature of the dielectric thereby causing a predetermined capacitance of the tunable capacitor, the temperature varying means including a resistive element for carrying current; a controller being coupled to the resistive element and being arranged for controlling the temperature of the dielectric by steering the current through the resistive element; and a temperature sensor for measuring an actual value of the temperature of the dielectric material, wherein the controller is arranged for receiving from the temperature sensor a temperature signal indicative of the actual value of the temperature, the controller being further arranged for receiving a desired temperature signal indicative for a desired temperature, and wherein the controller is arranged for controlling the temperature to decrease an absolute difference between the temperature signal and the desired temperature signal.