| 摘要 |
PURPOSE:To accelerate the reset completion and the set completion, by controlling a circuit so that the start point of time of a set pulse is just after the fall point of time of a reset pulse. CONSTITUTION:When a trigger pulse 24 is inputted, FFs 11 and 13 are set, and a current is flowed to an exciting coil 32. When the exciting current is increased to exceed a reference value 40, a pulse is outputted from a comparing circuit 4 to reset the FF11. At this time, a phase shifter 30 is saturated magnetically in the first direction. The output of an amplifying circuit 6 is applied to the exciting coil 32 from the point of time of the trailing edge of the output pulse of the comparing circuit 4, and a counter electromotive force is induced in the output side of an amplifying circuit 2. The counter electromotive force is integrated and is inputted to a detecting circuit 7. The detecting circuit 7 is operated only when the FF11 is reset, and the FF13 is reset when the output of the detecting circuit 7 exceeds a reference value 80 in a comparing circuit 8. Thus, the scanning time in a phased array antenna is shortened. |
