Magnetic resonance spectrometer system for realizing clock synchronization of magnetic resonance spectrometer

[0053] Embodiment 1: a clock recovery and frequency division unit applied to a radio frequency receiving module. Such as Figure 7 Shown is a schematic structural diagram of the clock recovery and frequency division unit of this embodiment;

[0054] The clock recovery and frequency division unit is composed of the following functional components: a clock shaping subunit, a phase-locked loop and a voltage-controlled oscillator. Wherein, the clock shaping subunit receives the reference clock signal from the clock source unit, and the reference clock signal is shaped into a standard clock signal with a duty ratio of 1:1, and the level standard is CMOS; the voltage-controlled oscillator provides A high-frequency clock with ultra-low clock jitter is given to the phase-locked loop. The voltage-controlled oscillator output clock jitter is usually between 200fs and 1000fs, and the frequency is between 3GHz and 4GHz. The input of the phase-locked loop mainly contains the clock signal af

[0056] Embodiment 2: A magnetic resonance spectrometer system for realizing clock synchronization of the magnetic resonance spectrometer.

[0057] The system includes: a clock source module and a radio frequency link composed of a radio frequency transmitting module and a radio frequency receiving module; the clock source module is used to supply synchronous clock signals to the radio frequency transmitting module and the radio frequency receiving module respectively; the radio frequency transmitting module and the radio frequency receiving module The modules all include: a working clock synchronization sub-module, which is used to receive a synchronous clock signal, and obtain one or more working clock signals that are synchronous with the clock source module and have low clock jitter based on the synchronous clock signal.

[0058] Wherein, the frequency of the synchronous clock signal is 10MHz, the digital-to-analog conversion chip DAC conversion clock of the radio frequency tra