Wide-Band Directivity of Receiving Arrays

Abstract

The method of maximizing the directional gain of a receiving array (heretofore useful only at a single frequency) is extended to the case of operation at a finite band width. It appears that although the directional gain of a broadside linear array for operation at a finite band width is less than that for operation at a single frequency, it is always greater, and often considerably greater, than the gain realized by use of the single-frequency design at the finite band width. Unlike the single-frequency design, whose directional gain falls very rapidly as the operating band width is increased from zero, the wide-band designs operate with good gain over a wide range of band widths. This research has been aided by funds made available under a contract with the Office of Naval Research.