| 摘要 |
There is provided a voltage-controlled oscillator which prevents generation of an irregular oscillation signal, reduces the number of parts including large size elements, realizes reduction in size of structure and easily adjusts output level of the oscillation signal. An oscillating transistor which operates in a grounded base system to output an oscillation signal, an amplifying transistor which operates in a grounded emitter system to amplify the oscillation signal and a resonance circuit connected to the collector of the oscillating transistor are provided. The resonance circuit is provided with a resonance micro-strip line with an intermediate tap connected in a DC circuit provided between the collector of the oscillating transistor and the emitter of the amplifying transistor and a resonance capacitor connected between the collector of the oscillating transistor and the ground point, and a coupling capacitance to transmit the oscillation signal is connected between the intermediate tap of the resonance micro-strip line and the base of the amplifying transistor.
|
