Array Synthesis Tool

The inter element spacing is always 0.49 λ when this design algorithm is used. If a directivity of less than 20dB, or a beamwidth of greater than 20 °, is specified, all the side-lobes will be equal and -20dB below the main beam directivity [Dolph-Chebychev excitation taper]. For higher gain designs, the first 5 side lobes will be -20dB below the main beam directivity [Villeneuve excitation taper].

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.

The inter element spacing is always 0.49λ when this design algorithm is used. If a directivity of less than 20dB, or a beamwidth of greater than 20 °, is specified, all the side-lobes will be equal and -20dB below the main beam directivity [Dolph-Chebychev excitation taper]. For higher gain designs, the first 5 side lobes will be -20dB below the main beam directivity [Villeneuve excitation taper]. The specification of the scan angle will introduce an inter element phase offset in the excitation. 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.

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.

The inter element spacing is always 0.5 λ when this design algorithm is used. The excitation taper can be selected between equal excitation [Uniform], uniform side lobe level [Dolph-Chebychev] and first few side lobes uniform [Villeneuve]. The side lobe level and number of side lobes (where applicable) can then be set.

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.

The inter element spacing can be used as an input to the design algorithm. Values between 0 λ and 5 λ are possible. If a spacing of over 0.5 λ is used, unwanted grating lobes will be present together with the desired main lobe. When this occurs, the peak directivity could be lower than designed for. The energy in the grating lobe should be compensated for in the design requirements of the main lobe. The direction of the main lobe can be specified between -90 ° and 90 degree. The excitation taper can be selected between equal excitation [Uniform], uniform side lobe level [Dolph-Chebychev] and first few side lobes uniform [Villeneuve]. The side lobe level and number of side lobes (where applicable) can then be set.

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.

The inter element spacing is always 0.49 λ when this design algorithm is used. If a directivity of less than 20dB, or a beamwidth of greater than 20°, is specified, all the side-lobes will be equal and -20dB below the main beam directivity [Dolph-Chebychev excitation taper]. For higher gain designs, the first 5 side lobes will be -20dB below the main beam directivity [Villeneuve excitation taper]. The specification of the scanangle will introduce an inter element phase offset in the excitation.

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.

The inter element spacing can be used as an input to the design algorithm. Values between 0 λ and 5 λ are possible. If a spacing of over 0.5 λ is used, unwanted grating lobes will be present together with the desired main lobe. When this occurs, the peak directivity could be lower than designed for. The energy in the grating lobe should be compensated for in the design requirements of the main lobe. The excitation taper can be selected between equal excitation [Uniform], uniform side lobe level [Dolph-Chebychev] and first few side lobes uniform [Villeneuve]. The side lobe level and number of side lobes (where applicable) can then be set.

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.

The inter element spacing designed by this algorithm will always be 0.5 λ. The excitation taper can be selected between equal excitation [Uniform] and near-in side-lobes at quasi-uniform specified level [Bayliss]. The side lobe level and number of side lobes can be set when using the Bayliss taper.

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.

The array orientation, the inter element spacing, the spacing method and the excitation taper can all be specified. The excitation taper can be selected between equal excitation [Uniform], uniform side lobe level [Dolph-Chebychev] and first few side lobes uniform [Villeneuve]. The side lobe level and number of side lobes (where applicable) can then be set.

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.

When this design algorithm is used, the inter element spacing is always 0.45 λ, with an equal number of radiators in the x- and y-direction when gain is specified, and a different number of radiators in the x- and y-direction when different 3dB beamwidths are specified in the x- and y-plane. The excitation per element is the product of two linear array excitations, one laid out along the x-axis and the other laid out along the y-axis. If a directivity of less than 20dB, or a beamwidth of greater than 20 °, is specified, the side-lobes per linear excitation are designed for -20dB below the main beam directivity [Dolph-Chebychev excitation taper]. For higher gain designs, each linear excitation is designed to have the first 5 side lobes -20dB below the main beam directivity [Villeneuve excitation taper].

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.

When this design algorithm is used, the inter element spacing is always 0.5 λ, with an equal number of radiators in the x- and y-direction when gain is specified, and an unequal number of radiators in the x- and y-direction when different 3dB beamwidths are specified in the x- and y-planes. The excitation per element is the product of two linear array excitations, one laid out along the x-axis and the other laid out along the y-axis.

The excitation taper may be set to equal excitation [Uniform], all side-lobes equal [Dolph-Chebyshev] or first few side-lobes equal [Villeneuve]. The side-lobe level and number of side lobes (where applicable) can then be set.

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.

When this design algorithm is used, the inter element spacing is always 0.5 λ, with an equal number of radiators in the x- and y-direction. The excitation per element is determined by the relative placement of the element on a Bayliss curve between the centre (origin) and the maximum outer radius of the array.

The excitation taper may be set to equal excitation [Uniform], or near-in side-lobes at quasi-uniform specified level [Bayliss]. The side-lobe level and number of side lobes (where applicable) can then be set, although it should be noted that the nature of the design makes this specification difficult to control. The results may often not be as specified.

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.

The inter element spacing can be used as an input to the design algorithm. Values between 0λ and 5λ are possible. An equal number of radiators in the x- and y-direction is chosen when gain is specified, and an unequal number of radiators in the x- and y-direction is chosen when different 3dB beamwidths are specified in the x- and y-planes. The excitation per element is the product of two linear array excitations, one laid out along the x-axis and the other laid out along the y-axis.

The excitation taper may be set to equal excitation [Uniform], all side-lobes equal [Dolph-Chebyshev or first few side-lobes equal [Villeneuve]. The side-lobe level and number of side lobes (where applicable) can then be set.

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.

The number of elements, the inter-element spacing and the spacing method can be specified in the x- and y-direction, respectively. The excitation taper can be selected between equal excitation [Uniform], uniform side lobe level [Dolph-Chebychev] and first few side lobes uniform [Villeneuve]. The side lobe level and number of side lobes (where applicable) can then be set. The excitation per element is the product of two linear array excitations, one laid out along the x-axis and the other laid out along the y-axis. It is important to note that the side-lobe specification is not guaranteed, since the layout is not adjusted to achieve these goals.

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.

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 ‘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.

The number of elements in the array, as well as the radius of the array may be specified.

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.

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.

The excitation distribution taper may be chosen as uniform (all elements excited uniformly) or based on a Taylor distribution. When using a Taylor distribution, the level of the side-lobes and/or the number of sidelobes to be kept at this level may be chosen, while the Uniform taper provides no sidelobe level control.

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.

The excitation distribution taper may be chosen as uniform (all elements excited uniformly) or based on a Taylor distribution. When using a Taylor distribution, the level of the side-lobes and/or the number of sidelobes to be kept at this level may be chosen, while the Uniform taper provides no sidelobe level control.

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.

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.

Physically, the number of elements along the circumference (arc), the number of elements along the height, the radius, the angular range and the element spacing along the height of the array may be set. Electrically, the incremental phase shift in radial and height direction may be set.

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.

The number of elements and the inter-element spacing in the x- and y-direction, respectively. The excitation taper can be selected between equal excitation [Uniform], uniform side lobe level [Dolph-Chebychev] and first few side lobes uniform [Villeneuve]. The side lobe level and number of side lobes (where applicable) can then be set. The excitation per element is the product of two linear array excitations, one laid out along the x-axis and the other laid out along the y-axis for a rectangular array. From this excitation distribution a subset for the triangular array is extracted. It is important to note that the side-lobe specification is not guaranteed, since the layout is not adjusted to achieve these goals.

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.