This algorithm allows the specification of a concentric circular array directly. Antenna Magus does not adjust the array layout at all to achieve specific electrical objectives. This option is useful when evaluating the performance of a custom or pre-designed array layout. The array is always designed so that the elements are arranged in the x-y plane, centered on the z-axis and the central element may be included or excluded.
|An example of a customized concentric circular array distribution.|
The number of concentric rings, spacing between the rings of elements, as well as the minimum azimuthal spacing between elements may be specified [Note that the azimuthal spacing is a minimum and the algorithm will adjust the spacing for each ring such that the elements in each ring are equally spaced, but are not closer than this value]....
In addition to the physical array layout properties, the excitation taper of the array may be specified to allow for beam steering and side-lobe-level control. As the effectiveness of element phasing and usage of a distribution taper are dependent on the physical layout and spacing of the array element, it may not be possible to achieve the specified performance. The angles are as defined below.
|Azimuthal (Φ) and elevation (θ) angle definition.|
More information about how the array synthesis tool should be used can be found in ‘Antenna Array Synthesis in Antenna Magus’ and in ‘Help: How do I use the Array Synthesis tool?’ (located in the Antenna Magus information browser). The latter article also describes the different excitation tapers in more detail, and provides references for further research.