| 摘要 |
PROBLEM TO BE SOLVED: To provide a detection device capable of improving detection sensitivity to detect the hand or the like in a gesture operation or the like, and an input device.SOLUTION: A varactor diode VD is arranged in an LC resonance part 11 of an oscillation circuit 10. An antenna part 2 is arranged on a power supply path 13 from a constant voltage power supply Vvd to the varactor diode VD. An AC electric field is formed in a space from the antenna part 2 in accordance with an AC signal generated by the oscillation circuit 10. When a human body approaches the antenna part 2, the frequency of the AC signal changes in accordance with a capacitance change detected by the antenna part 2. Furthermore, when the human body approaches the antenna part 2, the fluctuation of a voltage occurs in the power supply path 13, and the capacitance of the varactor diode VD changes. The change of the frequency of the AC signal is amplified in accordance with the change of the capacitance of the varactor diode VD. |
