Inductive feedback oscillator circuit
Figure 4-10 Inductive feedback oscillator circuit?
(a) Actual circuit; (b) AC equivalent circuit; (c) High-frequency equivalent circuit
Similar to the analysis of the capacitive feedback oscillator, the oscillation frequency of the oscillator can be approximated by the resonance frequency of the loop, namely
Where L is the total inductance of the loop, as shown in Figure 4-9
In fact, from the analysis of phase balance conditions, the oscillation frequency of the oscillator is expressed as
Vibration conditions Engineering does not consider the influence of gie when calculating the feedback coefficient, the size of the feedback coefficient is
According to the analysis of the vibration conditions, it can also be obtained that the gm at the time of vibration should meet
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