10.14489/td.2015.05.pp.018-026

2015, 05 May

DOI: 10.14489/td.2015.05.pp.018-026

Danilov V.N.
ABOUT SOME FEATURES OF FORMATION OF SIGNALS AND DEFINITION OF THE SIZE OF A NEAR FIELD FOR A NORMAL PROBES WITH PIEZOELECTRIC PLATES AND PHASED ARRAYS. Part 2
(pp. 18-26)

Abstract. On the basis of computer simulation of activity of the normal probe with the phased array (FA) the estimation of the size of a near field of such probe as with linear FA and FA of the rectangular form is justified. Within the limits of a near field the formation of the directivity characteristic of the probe implements, and outside of its decreasing of a signal amplitude on a probe axis at deleting from the probe takes place on relation for a far field. The features of formation of signals and definition of the size of a near field of the probe with FA are condi-tioned at a focusing of a signal in each point of a probe axis by absence of local maxima, as against the probe with piezoelectric plate.

Keywords: normal probe, phased array, size of a near field, far field, directivity characteristic, decreasing of a signal amplitude on a probe axis, sum signal, focusing, two dimensional phased array.

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V. N. Danilov
PJSC RPA “CNIITMASH”, Moscow, Russia. E-mail: Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра.

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DOI: 10.14489/td.2015.05.pp.018-026

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