| 摘要 |
A propagation detection method for an illegal wireless device, a propagation detection circuit, and a mobile phone equipped with the propagation detection circuit are provided to receive a wireless signal only of a particular frequency band sent from an illegal wireless device, and to process the received signal in serial so that the signal is outputted as a DC(Direct Current) voltage value, thereby obtaining high response efficiency. A wireless signal only of a frequency band sent from an illegal wireless device is received by using an antenna for a single frequency. Noise is filtered from the received wireless signal by using a noise processing circuit. The wireless signal from which the noise is removed is rectified as a DC by using a rectifying circuit. The wireless signal of the illegal wireless device is processed in serial and outputted as a DC voltage value via the noise processing step and the rectifying step. |
