| 摘要 |
PURPOSE:To make it possible to steer a beam by adjusting the delay value of a delay line by controlling the electrostatic capacity of a varactor diode by the output of a micro computer, etc. CONSTITUTION:Prior to the start of wave reception at one azimuth, control nucleus P making use of a micro computer, etc., outputs sequentially delay-value control signals for individual delay lines for matching the directivity of a received wave to the azimuth angle. Through D/A converter D/A, those output signals are converted into analog signals, which are sequentially supplied to corresponding to delay lines fi by signal distributor MX. The electrostatic capacity of varactor diode VD varies according to analog control signals, so that delay line fi will be variable in delay time. |
