The following techniques are preferred for broadening bandwidth

1. use of tip mass

2. array of  cantilver

3.Non linear methods i.e. use of magnets

Hi Suresh Balpande,

Do you know any method can increase the piezoelectric bandwidth with electronic component?

Dear Kok,

That method is available. You can go through this article which is just an example :

"Roundy, Shad, and Yang Zhang. "Toward self-tuning adaptive vibration-based microgenerators." Smart Materials, Nano-, and Micro-Smart Systems. International Society for Optics and Photonics, 2005. "

Dear Iman，

Thank for reply my question. This paper is utilised the piezoelectric effect to alter the cantilever beam stiffness for tuning the frequency. My work need to use compression based piezoelectric. In my opinion, the stiffness of compression piezoelectric disc is not easy to alter like the cantilever beam. Therefore I required to use the electronic circuit to wider the bandwidth to match the resonance frequency.  

Do you have any experience or method for my case? Appreciate your help, thank you~