| 摘要 |
PROBLEM TO BE SOLVED: To provide a rectenna which has a transmission function and enables downsizing and a long life.SOLUTION: The rectenna is equipped with: an antenna (10) for receiving radio waves; a rectification circuit (24) for rectifying radio waves received by the antenna; a transmission channel (22) connected to the antenna and the rectification circuit; and a modulation input circuit (29) having a variable capacitance element (34) whose one end is connected to a transmission channel between an antenna connection part (22a) at which the antenna is connected to the transmission channel and a rectification circuit connection part (22b) at which the rectification circuit is connected to the transmission circuit, and whose capacity varies in proportion to an electric voltage of modulated signal wave input from the other end. |
