| 摘要 |
<p>PURPOSE:To reduce the effect of noises and improve the performance of a radar by providing the inside of an antenna element with a counter circuit, controlling the counter circuit by a strobe signal and setting the output of the counter circuit as phase quantity data. CONSTITUTION:The transmission lines 9 and 10 of strobe signals A and B, respectively, are arranged in matrix with respect to antenna elements and the transmission line 3 of a clock signal is connected in parallel with the transmission lines 9 and 10. The strobe signals A and B are synchronized with the clock signal and outputted from a computer 1 to the antenna elements. This sets phase quantity data to the antenna elements 15, 16 and 17 connected to the transmission line of the strobe signal B1. A counter circuit 18 counts the number of pulses for a time when the signals A and B are in a level 'L'. When counting is terminated, high-order bits resulting from removing low-order bits from parallel output data are set to a data setting circuit 19. Further, the strobe signals B2, B3 and A are sequentially made the level 'L'. Thus, the phase quantity data can be set to the antenna elements by the operation of the circuits in the antenna elements without being transferred from the computer 1.</p> |
