| 摘要 |
Provided is an injection-locked-type frequency-locked oscillator capable of stable operation and exhibiting low phase noise. This injection-locked-type frequency-locked oscillator comprises: a locked loop (10) provided with a first injection-locked-type signal-controlled oscillator (14); and a second injection-locked-type signal-controlled oscillator (20). In the first injection-locked-type signal-controlled oscillator (14), an output frequency signal is made variable by an oscillation frequency control signal, and no reference clock signal is injected. In the second injection-locked-type signal-controlled oscillator (20), a reference clock signal corresponding to a reference clock signal of the locked loop (10) is injected, an oscillation frequency control signal corresponding to the same oscillation frequency control signal as the oscillation frequency control signal to the first injection-locked-type signal-controlled oscillation (14) is inputted, the circuit configuration is the same as that of the first injection-locked-type signal-controlled oscillator, and a desired frequency signal is outputted. |
