Feynman diagram analysis of transducer impulse response

Abstract

Transducer impulse response is analyzed by introducing two novel elements. First, the usual equivalent circuit of the transducer is replaced by a simple reentrant transmission line configuration. Second, a Feynman diagram method is applied which involves tracing the exciting signal through all possible pathways to the time and place of observation. The theory is applied under various conditions of electrical and acoustical loading, and results compared with computer simulations and physical experiments.