A New Explanation Crystal Oscillator with Injection Locking Phenomenon

In this research, a new explanation and design crystal oscillator based on injection locking phenomenon is proposed. The crystal oscillator is viewed as a regular oscillator whereas is ac small input signal is its forced function. In this work, a crystal is considered to be a very small sinusoidal signal generator. To guarantee that the injection locking phenomenon is occurred the frequency of the crystal must be very close to that of an oscillator. Then the output frequency of the oscillator is identical to the crystal’s frequency. With this phenomenon, a new design crystal oscillator is presented. It is focused on designing basis oscillator whose frequency is close to the crystal’s frequency. In addition, the appropriate position for feeding the forced function to the basis oscillator is determined. In examination, the Wein-brigde oscillator is employed to be an example to describe this proposed technique where the obtained experimental results are in accordant well with the theoretical result.