2GHz Voltage Controlled Oscillator Using Emitter Common Current

摘要

The present invention relates to a 2EH _Z voltage controlled oscillator using an emitter common current method, and more particularly to a 2EH _Z voltage controlled oscillator having emitter common current type output means for supplying a bias current and outputting amplified power to a load; A voltage distributing means for receiving and distributing a bias voltage; A negative resistance generating means connected in parallel to the voltage distributing means to generate a negative resistance; Amplifying means connected in parallel to the voltage distributing means and connected to the negative resistance generating means in parallel to receive the generated power, amplify and output the received power; A base terminal connected in parallel to the amplifying means in series to the negative resistance generating means, a collector terminal connected to the ground terminal, a transistor Q1 connected to the ground terminal, And resonance means connected in parallel to the emitter terminal of the transistor Q1 to vary the resonance frequency according to the change of the input voltage by receiving the adjustment voltage and selecting an appropriate parameter to increase the oscillation frequency to a desired frequency band There is an effect.