Low Cost, Wideband Ultrasonic Transmitter and Receiver for Array Signal Processing Applications

Title: Low Cost, Wideband Ultrasonic Transmitter and Receiver for Array Signal Processing Applications
Authors: Gonzalez-Hernandez, Juan
Bleakley, Chris J.
Permanent link: http://hdl.handle.net/10197/7118
Date: May-2011
Abstract: This paper presents a low-cost, wideband ultrasonic transmitter for in-air ultrasonic applications based on a conventional narrowband piezoceramic transducer with a LR circuit modification. An analytic method for calculation of the optimum circuit parameters for bandwidth expansion of the ceramic ultrasonic transmitter is described, together with experimental data proving the viability of the method. A low cost wideband ultrasonic receiver array is also presented. The results of the first characterization of MEMs microphones in the ultrasonic band and their use in a sensor array for ultrasonic Array Signal Processing applications is presented. The study presents examples of prototype performance in ultrasonic indoor applications.
Funding Details: Science Foundation Ireland
Type of material: Journal Article
Publisher: IEEE
Copyright (published version): 2010 IEEE
Keywords: Array signal processing;Microelectromechanical systems (MEMS);Piezoelectric;Ultrasonic
DOI: 10.1109/JSEN.2010.2084568
Language: en
Status of Item: Peer reviewed
Appears in Collections:Computer Science Research Collection
CASL Research Collection

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