a high - frequency device includes an antenna coil , a variable capacitance element , and an rfic . the variable capacitance element is configured by capacitor units in each of which a ferroelectric film is sandwiched between capacitor electrodes , and a capacitance value changes according to a control voltage applied between the capacitor electrodes . a control voltage application circuit configured by a plurality of resistance elements of different resistance values , and a resistance element of the variable capacitance element unit configured to apply a control voltage to the variable capacitance element are arranged in a layered manner above the capacitor unit . thus , a variable capacitance element and a high - frequency device that includes a control voltage application circuit eliminating problems such as distortion due to active elements and growing ic size along with complication of circuit architecture , and ensuring reliability on impact due to falling or the like , are provided .