压电陶瓷发射换能器的Butterworth匹配定理

A theorem on Butterworth matching for piezoelectric ceramic emission transducer

摘要: 提出并证明了压电陶瓷发射换能器的Butterworth匹配定理。定理的显公式形式使复杂的宽带匹配问题变成为简单的算术问题.举例说明经过匹配之后,换能器带宽明显提高,而功率增益却接近于1。

Abstract: A theorem on Butterworth matching for piezoelectric ceramic emission transducer is presented and proved. The complicated problem of broad-band matching is changed to a simple arithmetical one due to explicit formulas of the theorem. It is shown in an example that after matching, bandwidth of the transducer increases remarkably while the power gain is close to 1.