Crystal Oscillator plays irreplaceable role in NFC mobile phone. The NFC in mobile phone has characteristic of two-way connection and recognition, working in 13.56MHz frequency range, and the function distance is about 1...
Crystal Filter is widely used in the reproduction, recording and transmission of sound. The piezoelectric wafers mounted on the microphone will change the vibration of the sound.
The piezoelectric constant is a parameter to measure the strength of the piezoelectric effect of the material, which is directly related to the sensitivity of the piezoelectric output.
The cause of the piezoelectricity is related to the Crystal Filter structure. The common characteristic is the crystal point group has no symmetric center.