電壓控制振蕩電路設(shè)計(jì)與仿真外文翻譯-資料下載頁
2025-01-13 14:17本頁面
【正文】 voltagecontrolled oscillator chip MC1648 and varactor MV209, external a LC oscillation circuit of varactor vco. Only need to adjust the voltage at the ends of the varactor diode, can change the output frequency MC1648. The adoption of integrated chip, simple circuit design, high system reliability, and phaselocked loop frequency synthesis technique can be used to make the output frequency stability is further improved.the RC voltagecontrolled oscillatorRC voltagecontrolled oscillator39。s frequency stability is low and wide range of frequency modulation, the RC voltagecontrolled oscillator in the monolithic integrated circuit is monly used in RC voltage controlled multivibratorvoltage controlled crystal oscillatorIn a quartz crystal oscillator frequency stabilization, the varactor diode and concatenated quartz crystal phase, can form a voltage controlled crystal oscillator. In order to expand the range of frequency modulation, available AT cut quartz crystal and access the base frequency of quartz crystal, the circuit can also by broadening the scope of the FM transformation network.At microwave frequencies, with reflector voltage control reflex klystron oscillator frequency with the anode voltage control frequency magnetron oscillator and so on also belong to the nature of the voltagecontrolled oscillator. Voltagecontrolled oscillator application range is very wide. Integration is an important development direction. Quartz crystal voltagecontrolled oscillator frequency stability and frequency modulation in the contradiction between range and needs to be solved. Along with the development of the deep space munication, will need internal noise level very low voltage controlled oscillator.
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