Study of Sigma-Delta Modulator for Underwater Acoustic Amplifier

DOI

10.2991/isrme-15.2015.118How to use a DOI?

Keywords

sonar; underwater acoustic amplifier; Sigma-Delta modulator; noise shaping; match filtering

Abstract

This paper is briefly discussed the theory of Sigma-Delta modulator, analyzed the performance of L-order single bit Sigma-Delta modulator. A system modeling for 2nd order Sigma-Delta modulator is simulated. Under laboratory conditions, An acoustic amplifier with Sigma-Delta modulation and PWM modulation is constructed, combined the matching theory, the impedance matching for acoustic transducer is implemented. The test results show that: Sigma-Delta modulation technique can be used for acoustic amplifier. Compared with PWM modulator, Sigma-Delta modulator has the features of high output signal-to-noise ratio (SNR), high work efficiency and low total harmonic distortion (THD) and has splendid application value.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Yongheng Wang
AU  - Dajun Sun
PY  - 2015/04
DA  - 2015/04
TI  - Study of Sigma-Delta Modulator for Underwater Acoustic Amplifier
BT  - Proceedings of the 2015 International Conference on Intelligent Systems Research and Mechatronics Engineering
PB  - Atlantis Press
SP  - 563
EP  - 570
SN  - 1951-6851
UR  - https://doi.org/10.2991/isrme-15.2015.118
DO  - 10.2991/isrme-15.2015.118
ID  - Wang2015/04
ER  -