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Acoustic Vector-Corrected Impedance Meter

Abstract
We describe the development of a novel instrument intended for the measurement of the acoustical reflection coefficient of materials. The instrument effectively implements a one-port vector-corrected network analyzer in the acoustic, rather than the electromagnetic, domain. Employing the well-documented methods of error correction familiar to microwave engineers, this instrument permits automated measurement of an acoustic impedance presented to a waveguide port. A dual-directional coupler allows a working frequency range of well over an octave. In principle, a set of six couplers would allow measurement from 100 to 50000 Hz.
Type
Journal Article
Type of thesis
Series
Citation
Scott, J. B., & Pennington, K. (2014). Acoustic Vector-Corrected Impedance Meter. IEEE Transactions on Instrumentation and Measurement, 63(12), 2726–2732. http://doi.org/10.1109/TIM.2014.2327474
Date
2014-12
Publisher
IEEE
Degree
Supervisors
Rights
This is an author’s accepted version of an article published in the journal: IEEE Transactions on Instrumentation and Measurement. © 2014 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.