HUA Qing, SHEN Tuo, ZHANG Xuan-xiong. Acoustoeletric model of piezoelectric microphone with package structure[J]. 2018, 37(11): 42-44. DOI: 10.13873/j.1000-9787(2018)11-0042-03.
Based on the principle of acoustoelectrical analogy
the structural parameters of micro-electromechanical system(MEMS) piezoelectric microphones are discussed
and an equivalent circuit model for a piezoelectric microphone lumped element with package structure is proposed. The model is used to theoretically analyze on performance of the piezoelectric microphone. Comparing the simulation results with the actual experimental data
the simulation results of the proposed equivalent acoustoelectric model are fitted with the experimental results
which proves the rationality of the equivalent circuit.It provides a theoretical basis for further optimizing the structure of MEMS piezoelectric microphones.
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