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      Development and Basic Calibration of an Acoustic Vector Network Analyser

      MacDonell, Marcus Scott Glengarry; Scott, Jonathan B.
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      DevelopmentOfAnAVNA_MacdonellScott_ENZCon2017_paper_10.pdf
      Published version, 6.062Mb
      Link
       enzcon2017.canterbury.ac.nz
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      MacDonell, M., & Scott, J. B. (2017). Development and Basic Calibration of an Acoustic Vector Network Analyser. Presented at the Electronics New Zealand Conference 2017 (ENZCon 2017), Christchurch, New Zealand, 4-6 December 2017.
      Permanent Research Commons link: https://hdl.handle.net/10289/11552
      Abstract
      This project aims to develop a method that drastically improves measurement of the acoustic properties of objects. Previously research at the University of Waikato has made progress with acoustic technologies as a precursor to a dual port vector network analyser. These technologies have been furthered to this end by 3D printing a modified coupler that now includes a flange with alignment pins, and a groove to house an O-ring as well as a number of other ``custom'' components for the coupler assembly. This assembly has been interfaced successfully with a VNA and collected data, this process is not straightforward and requires carefully thought-out adjustment to produce sensible data. Complicating this process is the vast difference in propagation speeds for acoustic and electromagnetic signals. The swept measurements performed show promising results that further prove the hardware and indicate that particular calibration terms namely those for isolation that are normally ignored in the electromagnetic domain are potentially crucial in the acoustic domain.
      Date
      2017
      Type
      Conference Contribution
      Rights
      © 2017 copyright with the authors.
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      • Science and Engineering Papers [3019]
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