| 摘要 |
A transponder system including first and second arrays of receiving and transmitting antenna elements arranged in spaced apart relationship with a predetermined spacing. The antenna elements of the first array are connected, via respective transmission modules, to respective antenna elements of the second array in accordance with their positions in the arrays thus forming receiving and transmitting pairs of antenna elements. The transmission modules include: a sampler adapted for digitizing signals received by the receiving antenna element of the corresponding pair, a memory for storing a digital representation of the received signals, and a signal generation module operable for generating from the digital representation a signal to be transmitted by the transmitting antenna element of the corresponding pair with a predetermined temporal delay to thereby provide a predetermined angular shift between a waveform of the received input signal and a waveform of the collective output signal. |
