Several terms piezoelectric ceramic chip production

Jargon usually piezoelectric ceramic wafers are the following: 

     1 the parallel resonance frequency fp (parallel resonance frequency): an equivalent circuit of the piezoelectric transducer resonance frequency of the parallel branch is called the parallel resonant frequency, represented by fp, i.e. fp = 

     2 resonant frequency fr (resonance frequency): a piezoelectric oscillator frequency susceptance zero in the lower frequency is called the resonant frequency, represented by fr. 

     3 anti-resonant frequency fa (antiresonance frequency): a piezoelectric oscillator frequency is zero susceptance in the higher frequency is referred to an anti-resonant frequency, represented by fa. 

     4.Max admittance frequency fm (maximum admittance frequency): piezoelectric oscillator frequency admittance maximum frequency is called the maximum admittance, then the minimum impedance of the transducer, it is also known as the minimum impedance frequency with fm said. 

     5 minimum admittance frequency fn (minimum admittance frequency): piezoelectric oscillator frequency admittance called the most hours minimum admittance frequency, then the maximum impedance transducer, also called maximum impedance frequency, represented by fn. 

     6 base frequency (fundamental frequency): a vibration mode given the lowest resonant frequency is called the fundamental frequency, often become the fundamental frequency. 

     These basic terms are piezoelectric ceramic chip throughout the production life of the most common. Those who engaged in the production of piezoelectric ceramic chip companies will understand these. Parameters of these terms will determine the piezoelectric ceramic chip uses.