【摘要】 从分布式压电源声激发原理出发,分析了具有不同空间畴结构和激发方式的声激发问题;提出和证明了用上述晶体激发高频体声波的可能性,并导出用上述晶体做成高频、高转换效率的压电换能器的输入阻抗或导纳的解析表式,这种换能器工艺比较简单。更多还原

【Abstract】 Starting from the exciting principle of distributed pie- zoelectric sources, we have analysised the acoustic exciting problems in piezoelectric crystals with different spatial domaih structures and man- ners by Fourier transform or Green’s function method; have presented and demonstrated the possibility of exciting the high frequency bulk ac- oustic waves by piezoelectric crystals mentioned above; and we have de- rived the analytical expressions of corresponding input impedance or con- ductance of the transducers for designing high frequency and high ef- ficiency transducers Technology of those transducers is simper更多还原