Abstract
We present the fabrication and characterization of flexible planar electrodynamic loudspeakers. Conductive spirals are fabricated on a flexible and transparent polyethylene terephthalate substrate via screen printing. Different geometries (circular and rectangular) and sizes of the conductive spirals are investigated to understand their impact on the performance. The optimized circular spiral allows achieving an average sound pressure level of 63 dB at 1m distance in 2kHz-20kHz band, proving the suitability of these devices as high-frequency loudspeaker drivers.
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Madagalam, M., Torraca, P. L., Ahmed, M., Douaki, A., Sanchezfayos, I. M., Cohen, N., … Lugli, P. (2022). Screen-Printed Flexible Circular and Rectangular Silver Spirals for Planar Electrodynamic Loudspeakers: A Comparative Study of Pressure Frequency Response. In 6th IEEE Electron Devices Technology and Manufacturing Conference, EDTM 2022 (pp. 104–106). Institute of Electrical and Electronics Engineers Inc. https://doi.org/10.1109/EDTM53872.2022.9798156
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