An Analytical Model for Bandwidth Enhancement of Air-Coupled Unsealed Helmholtz Structural CMUTs

<p>FEM results of the Standard case: sound pressure level (SPL) over the membrane and holes (dB), hole radius changes from 40 <i>μ</i>m to 80 <i>μ</i>m with 5 <i>μ</i>m step size.</p>

Journal of Sensors

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Figure 15

Figure 15: An Analytical Model for Bandwidth Enhancement of Air-Coupled Unsealed Helmholtz Structural CMUTs 