CST – Computer Simulation Technology

Concentric Circular Array Specify the Layout Directly

1

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.

1 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.

1 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.

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