| 摘要 |
A proximity probe, for use in determining a distance to a probe target, includes a first antenna configured to wirelessly receive a radio-frequency signal at a first predetermined frequency and a converter configured to convert the received signal to a driving signal and to an electrical signal. The proximity probe also includes a second antenna configured to receive power via the driving signal and to generate a signal indicative of a distance from the proximity probe to the probe target, and a third antenna configured to transmit the generated signal. |
