Abstract
In order to improve the energy harvesting efficiency of piezoelectric cantilever beam (PCB) in the environment. This paper presents a new type of piezoelectric cantilever beam which is the single-sided trapezoidal loop shaped PCB. By theory analysis, the equivalent circuit model was established, resonant angular frequency is inversely proportional to the length of cantilever beam. Based on finite element analysis method, the piezoelectric performance of single-sided trapezoidal loop shaped PCB and that of single-sided rectangular loop shaped PCB are compared with the same areas. The analysis results show that the coupling voltage of the former is larger, the output power of single-sided trapezoidal loop shaped PCB is improved, and the theoretical derivation of the inverse relationship between the frequency and length is verified.
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