The nonlinear interaction between two bulk elastic waves of different polarisations is used to generate a propagating elastic wave carrying a correlation of the two input waveforms. Measurements show the high efficiency and dynamic range of the device and a variable-delay capability is demonstrated.
Inspec keywords: correlators; acoustic delay lines; acoustic microwave devices
Other keywords:
Subjects: Information theory; Signal processing and detection; Sonic and ultrasonic transducers and sensors
References
-
-
1)
- G.S. Kino , S. Ludvig , H.J. Shaw , W.R. Shreve , J.M. White , D.K. Winslow . Signal processing by parametric interactions in delay line devices. IEEE Trans. , 162 - 173
-
2)
- Rouvaen, J. M., Bridoux, E., and Torguet, R.: unpublished.
-
3)
- T.C. Lim , E.A. Kraut , R.B. Thompson . Nonlinear materials for acoustic surface wave convolver. Appl. Phys. Lett. , 127 - 129
-
4)
- C.F. Quate , R.B. Thompson . Convolution and correlation in real time with nonlinear acoustics. Appl. Phys. Lett. , 494 - 496
-
5)
- G.A. Coquin , D.A. Pinnow , A.W. Warner . Physical properties of lead molybdate relevant to acousto optic device applications. J. Appl. Phys. , 2162 - 2168
-
6)
- W. Otto , N.J. Moll . A lithium niobate silicon surface wave convoluter. Electron Lett. , 600 - 602
-
7)
- J.M. Rouvaen , E. Bridoux , M. Moriamez , R. Torguet . Modulation of hypersound by ultrasound via strong collinear interaction. Appl. Phys. Lett. , 499 - 501
-
8)
- R. Torguet , E. Bridoux . Étude théorique et expérimentale de la génération harmonique acoustique dans le molybdate de plomb. Rev. Phys. Appl. , 291 - 302
-
9)
- M. Luukkala , J. Surraka . Acoustic convolution and correlation and the associated nonlinearity parameters in LiNbO3. J. Appl. Phys. , 2510 - 2518
-
10)
- R.N. Thurston , M.J. Shapiro . Interpretation of ultrasonic experiments on finite amplitude waves. J. Acoust. Soc. Am , 1112 - 1125
-
1)
http://iet.metastore.ingenta.com/content/journals/10.1049/el_19750019
Related content
content/journals/10.1049/el_19750019
pub_keyword,iet_inspecKeyword,pub_concept
6
6