| 摘要 |
A passive data carrier device (100) comprises an input port (110) for receiving a finite duration radio frequency input signal of defined time and frequency spectral characteristics. The data carrier device (100) comprises at least one branch (130) having combinations of passive RF elements, such as band filters (134) and time delays (136), optionally together with powder dividers (120) and combiners (140). The input signal is processed by the device (100) to form an output signal having time and frequency spectral characteristics different from the input signal. The data carrier device (100) has potential application in an RF identification system. |
