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Quartz crystal oscillator is the most core electronic component in 5G technology, which is used to provide reference clock signal and receive transmission signal. Because 5G has very high requirements on the use of network equipment

Crystal oscillations, used to generate pulses, have their theoretical roots in "high-frequency electronic circuits". In "high frequency electronic circuits", it is the theory and circuit of high frequency oscillator, transmit, receive, modulation, demodulation and so on.

Advances in electronic technology have made it possible to replace the large scale plug-in crystal oscillator with a small, thin chip crystal oscillator. The previously known plug-in crystal oscillator is generally 2-pin, but the patch crystal oscillator is different.

From the equivalent circuit of quartz crystal resonator, it can be known that it has two resonant frequencies, that is, when a, L, C and R branches occur in series resonance, its equivalent impedance is the minimum (equal to R).