Patent ID: 8259431

Claim:
A variable capacitor array comprising: a first variable capacitor comprising a first dielectric layer having a first dielectric constant which is varied by application of a voltage, and a pair of electrodes holding the first dielectric layer therebetween; a second variable capacitor comprising a second dielectric layer having a second dielectric constant which is varied by application of a voltage, and a pair of electrodes holding the second dielectric layer therebetween; a first terminal connected to one electrode of the pair of electrodes of the first variable capacitor; a second terminal connected to one electrode of the pair of electrodes of the second variable capacitor; and a third terminal connected to both of another electrode of the pair of electrodes of the first variable capacitor and another electrode of the pair of electrodes of the second variable capacitor, wherein a selection state can be selected by switching between at least two selection states among three selection states of a first selection state that the first terminal and the third terminal are selected, a second selection state that the second terminal and the third terminal are selected, and a third selection state that the first selection state and the second selection state are selected simultaneously, wherein a variable capacitance range in the first selection state and a variable capacitance range in the second selection state partially overlap with each other and/or the variable capacitance range in the first selection state and a variable capacitance range in the third selection state partially overlap with each other, the variable capacitance range in the second selection state and the variable capacitance range in the third selection state being separated from each other.