| 摘要 |
Voltage-controlled microwave oscillator (100) comprising: an active component (110) designed with a push-push structure and arranged between two nodes (112), with a central output (111) at a frequency f 0 and having a negative differential resistance at the said nodes (112) able to support an oscillation at a frequency f/2; two lines (120), the opposite ends (121a,121b) of which are respectively connected to the associated node (112) of the active component (110) and to a varactor diode (122); a central node circuit (130) comprising a central node (131) to which are connected: the said varactor diodes (122), a decoupling inductor (140), and a first LC circuit (150) comprising a first inductor (151) and a first capacitor (152) connecting the central node (131) to the real earth of the oscillator and resonating at the frequency f 0 /2 so as to produce a short-circuit to earth at said frequency, said oscillator comprising a second LC circuit (160) for connecting the central node (131) to earth, arranged in parallel with the first circuit (150), comprising a second capacitor (162) and a second inductor (161) arranged in series, said first LC circuit (150) and second LC circuit (160) being able to produce a short-circuit at the frequency f 0 /2 and an open circuit at the output frequency f 0 of the oscillator, between the central node (131) and earth. |
