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Walker, Alan
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Publications (9/9 displayed)
- 2019Comparison of empirical and predicted substrate temperature during surface melting of microalloyed steel using TIG technique and considering three shielding gasescitations
- 2018“Pipe Organ” inspired air-coupled ultrasonic transducers with broader bandwidthcitations
- 2017A pipe organ-inspired ultrasonic transducercitations
- 2017“Pipe organ” air-coupled broad bandwidth transducer
- 2016A Mathematical Model of a Novel 3D Fractal-Inspired Piezoelectric Ultrasonic Transducercitations
- 2016A theoretical model of an ultrasonic transducer incorporating spherical resonatorscitations
- 2012The use of fractal geometry in the design of piezoelectric ultrasonic transducerscitations
- 2010An electrostatic ultrasonic transducer incorporating resonating conduits
- 2010A theoretical model of an electrostatic ultrasonic transducer incorporating resonating conduitscitations
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article
A pipe organ-inspired ultrasonic transducer
Abstract
This article considers a number of backplate designs for the bandwidth improvement of electrostatic ultrasonic transducers in both transmission and reception modes. Motivated by the design of pipe organs, transducers with backplates which incorporate a number of acoustically resonating conduits are modelled using a transmission line mathematical model which describes the displacement of the electrostatic membrane. The model illustrates that by increasing the number and varying the length of these conduits, the transmission voltage response and the reception force response can be improved over the traditional design by around 50 and 35%, respectively.<br/>