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    • 1. 发明公开
    • TUNABLE CAPACITOR
    • 可调电容
    • EP2274756A1
    • 2011-01-19
    • EP09742493.1
    • 2009-04-29
    • NXP B.V.
    • FURUKAWA, YukikoREIMANN, KlausJEDEMA, Friso JacobusTIGGELMAN, Markus Petrus JosephusROEST, Aarnoud Laurens
    • H01G7/04
    • H01G7/04
    • The invention relates to electronic device having an operation temperature range, wherein the electronic device comprises a tunable capacitor (CST) comprising a first electrode (BE), a second electrode (TE), and a dielectric (FEL) arranged between the first electrode (BE) and the second electrode (TE). The dielectric (FEL) comprises dielectric material (FEL) having a value of a relative dielectric constant (ε
      r ) varying at least within the operation temperature range. The electronic device further comprises a temperature varying means (RES) being thermally coupled to the tunable capacitor for providing a temperature of the dielectric (FEL) causing a predetermined capacitance of the tunable capacitor (CST). The invention, which relies on the idea of varying temperature to vary a capacitance of a capacitor stack, provides an alternative tunable capacitor type for the known types. Advantageous embodiments feature high-tuning ratio, small device area, and stable capacitance value in case the temperature is well controlled. The invention further relates to a semiconductor device comprising the electronic device in accordance with the invention, to an electronic circuit comprising such electronic device, and to a method of manufacturing such electronic device.