【摘 要】
：
采用双放大器并联连接形式的射频振荡器可以获得很高的频率稳定度。因为在这种形式的电路里造成相位噪声的因素互相抵消。这种振荡电路由两个调谐放大器组成,一个放大器的谐
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采用双放大器并联连接形式的射频振荡器可以获得很高的频率稳定度。因为在这种形式的电路里造成相位噪声的因素互相抵消。这种振荡电路由两个调谐放大器组成,一个放大器的谐振回路是另一个放大器的局部反馈回路。由于每一个放大电路都向另一个放大电路提供振荡必须的条件,所以两个电路产生相同的频率。如图所示,由于反馈回路和输入端是并联的,所以电路1的容性输入电纳向电路2提供负电导,而电路
The use of dual amplifier parallel connection in the form of RF oscillator can get a high frequency stability. Because of the phase noise caused by this form of the circuit offset each other. This oscillating circuit consists of two tuning amplifiers, the resonant circuit of one amplifier being the local feedback loop of the other amplifier. Since each amplifying circuit provides the necessary conditions for oscillation to the other amplifying circuit, the two circuits generate the same frequency. As shown, the capacitive input susceptance of circuit 1 provides a negative conductance to circuit 2, since the feedback loop and input are in parallel, and the circuit
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