Oscillating device

An oscillating device comprising:

• a first quartz crystal resonator having a first resonant frequency;
• a driving circuit coupled to the first quartz crystal resonator, wherein the driving circuit is configured to drive the first quartz crystal resonator to generate a first oscillating signal having the first resonant frequency;
• at least two second quartz crystal resonators coupled in parallel and coupled to the driving circuit and the first quartz crystal resonator, wherein the at least two second quartz crystal resonators has a second resonant frequency, and the at least two second quartz crystal resonators are configured to receive and rectify the first oscillating signal to generate a second oscillating signal having the second resonant frequency;
• and
• a first waveform adjustment circuit coupled to the at least two second quartz crystal resonators and configured to receive the second oscillating signal, wherein the first waveform adjustment circuit is configured to adjust the second oscillating signal to generate a first waveform adjustment signal.