| 摘要 |
An object detector for detecting elongate conductive objects, comprising: a transmitter arranged to generate a transmit signal; and a transmit antenna, coupled to said transmitter and arranged to radiate said transmit signal; wherein the object detector is arranged to generate a detection signal, the detection signal being based on at least one characteristic of a portion of the transmit signal reflected by the transmit antenna; and the at least one characteristic of the portion of the transmit signal reflected by the transmit antenna changes in response to movement of the detector in relation to a detectable object. |
