Nayak, B and Gupta, H and Roy, K and Ashok, A and Shastri, V and Pratap, R (2020) An Experimental Study of the Acoustic Field of a Single-Cell Piezoelectric Micromachined Ultrasound Transducer (PMUT). In: 2020 5th IEEE International Conference on Emerging Electronics, ICEE 2020, 26 - 28 November 2020, New Delhi.
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Abstract
Piezoelectric micromachined ultrasound transducers (PMUTs) have gained popularity in the past decade as acoustic transmitters and receivers. As these devices usually operate at resonance, they can deliver large output sound pressures with very low power consumption. This paper explores the influence of the transmitter's packaging on the radiated acoustic field in air. We run simplified axisymmetric numerical models to observe the change in the acoustic field and directivity with respect to the device's package dimensions. The simulations demonstrate a notable change in the directivity of transmitter based on the size of the baffle. Experimental measurements are carried out to validate the simulations, which can prove useful in designing packages for transmitters to meet application specific requirements
| Item Type: | Conference Paper |
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| Publication: | 2020 5th IEEE International Conference on Emerging Electronics, ICEE 2020 |
| Publisher: | Institute of Electrical and Electronics Engineers Inc. |
| Additional Information: | The copyright for this article belongs to the Authors. |
| Keywords: | Acoustic fields; Transmitters; Ultrasonic transducers, Acoustic transmitters; Air-coupled; At resonance; Directivity; Micromachined ultrasound transducers; Piezoelectric; Piezoelectric micromachined ultrasound transducer; Single cells; Sound pressures; Transmitter and receiver, Piezoelectricity |
| Department/Centre: | Division of Interdisciplinary Sciences > Centre for Nano Science and Engineering |
| Date Deposited: | 23 Jan 2023 06:12 |
| Last Modified: | 23 Jan 2023 06:12 |
| URI: | https://eprints.iisc.ac.in/id/eprint/79245 |
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