| 摘要 |
PURPOSE:To miniaturize a circuit by using the BPF of a multiplier in common with the resonance circuit of an oscillator. CONSTITUTION:A microwave oscillator 35 in synchronizing with a frequency Nfr is coupled to a nonlinear element 32 such as a step recovery diode which is driven by a signal having a frequency fr from a reference signal source 31 comprising a temperature compensation type crystal oscillator or the like and generates harmonics such as frequency Nfr. A negative resistance circuit 34 including an active element and a resonance circuit 33 resonated near the self-running frequency ff ( Nfr) from the element 32 and generating a negative resistance, are connected to a microwave oscillator 35. The impedance viewing the circuit 33 from the element 32 has a resonance point near the frequency Nfr, then the output of the signal source 31 is multiplied into the frequency Nfr not passing through the BPF. |
