Circular: Azimuthal direction of peak directivity

This synthesis algorithm will design a circular array for a specified directivity in a given azimuthal direction. The array is always designed so that the elements are arranged in the x-y plane, centered on the z-axis.

An example of a 3D pattern for this array.

An azimuthal direction may be specified, together with either directivity, a given radius or a specific number of elements. When an azimuthal direction and directivity are specified, the design algorithm designs the array for the least number of elements with adjacent element spacing of approximately a quarter wavelength.

When specifying the number of elements, the smallest possible radius is designed for, while when specifying the array radius, the smallest number of elements are chosen; both with adjacent element spacing of approximately a quarter wavelength.

More information about how the array synthesis tool should be used can be found in the array article in the information browser. This article also describes the different excitation tapers in more detail, and provides references for further research.