ON THE DESIGN OF ONE-DIMENSIONAL SPARSE ARRAYS WITH APODIZED END ELEMENTS (FriPmOR1)

Author(s) : Sanjit Mitra (University of California, Santa Barbara, USA) Gordana Jovanovic-Dolecek (INAOE, Mexico) Mikhail Tchobanou (Moscow Power Engineering Institute, Russia)

Abstract : In ultrasound scanners, a two-way radiation pattern is generated by a transmit array and a receive array. The design of such arrays is simplified by treating the problem as the design of an "effective aperture function" $w_{eff}(n)$ which is given by the convolution of the transmit aperture function $w_T(n)$ and the receive aperture function $w_R(n)$. In this paper we consider the design of one-dimensional sparse transmit and receive arrays with an apodized effective aperture function. The design approach is based on the factorization of a polynomial representation of the effective aperture function.

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