| 摘要 |
PURPOSE:To obtain a frequency storage device for storing faithfully its frequency without being influenced by an input frequency, by providing a mixer on an input and an output of a delay composite loop, and varying its local oscillating signal frequency by a modulator. CONSTITUTION:The titled circuit is provided with an input control switch 1, an input coupler 2, a loop amplifier 3, an output coupler 4, a delay line 5, a loop control switch 6, an output control switch 7, etc. in the same way as a usual device, and by adding newly, an input mixer 11 for bringing an input signal to a frequency conversion, an input filter 12 for eliminating an unnecessary wave generated therein, and an output mixer 13 for returning a signal from a delay composite loop, to its original place are provided. Moreover, an output filter 14 for eliminating an unnecessary wave from the mixer 13, a modulator 15 for modulating a frequency of a local oscillator 16, the local oscillator 16 whose frequency is varied by a signal therefrom, and a distributor 17 for distributing its output to the input and output mixers 11, 13 are provided. By constituting this circuit in such a way, a local oscillating signal frequency of two mixers is modulated, and a phase discontinuous generation of a signal in the loop is obstructed. |
