Compact antenna test range reflector edge treatment

Parini, C.G.; Philippakis, M.

doi:10.1049/el:19960074

Cited by 7 publications

(4 citation statements)

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“…Considering that the edge-diffracted waves are not perfect plane waves, the relationship defined by (6) and Table I is only approximately valid. The actual ripples of the near field might be bigger than that.…”

Section: Discussionmentioning

confidence: 99%

“…It can be seen that only the left and right edges take the dominant effect on the formation of the ripple. This means that in (6). Assume that the left or right edge-diffracted wave can be approximately seen as a single perfect plane wave.…”

Section: Conversion Of Spatial Specifications and Angular Specifmentioning

confidence: 99%

“…According to (6) and Table I, if the maximum ripple in line is required to be less than 1.0 dB, the relative amplitude of the single edge-diffracted wave should be less than dB.…”

Section: Conversion Of Spatial Specifications and Angular Specifmentioning

confidence: 99%

“…In order to control the edge diffraction, the CR reflector is usually designed to have serrated or rolled edges [1]- [6]. The serrated edges are more widely used for the sake of easier manufacturing and lower cost [7].…”

Section: Introductionmentioning

confidence: 99%

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Compact Range Performance Evaluation Using Aperture Near-Field Angular Spectrums

Quan

2013

IEEE Trans. Antennas Propagat.

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For a compact range (CR), the near-field angular spectrum can be obtained by making an inverse Fourier transform of its aperture spatial near field. The characteristics of the aperture design have been carried by the aperture near-field angular spectrum. The direct wave and edge-diffracted waves from the aperture can be separated and distinguished clearly in the angular domain. Therefore, the CR performance can be evaluated and improved accordingly. In this paper, based on the aperture field convolution method and plane wave spectrum (PWS) theory, near-field angular spectrums for different apertures have been computed. The general criteria for the CR aperture design have been discussed. The selections of the whole aperture shape, the serration height, the serration base length, the serration number, and the serration shape (including isosceles and right-angled triangles) have been compared. At last, the near fields of an optimized serrated-edge aperture and an original circular aperture in different transverse planes have been computed and compared. The width and height of the apertures are all 30 wavelengths in free space. In order to suppress the sidelobes, a Chebyshev window with dB sidelobes has been adopted in the spatial-angular transform.Index Terms-Aperture antennas, compact range (CR), convolution, near fields, plane wave spectrum (PWS), spectrum analysis.

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Section: Discussionmentioning

confidence: 99%

Section: Conversion Of Spatial Specifications and Angular Specifmentioning

confidence: 99%

“…According to (6) and Table I, if the maximum ripple in line is required to be less than 1.0 dB, the relative amplitude of the single edge-diffracted wave should be less than dB.…”

Section: Conversion Of Spatial Specifications and Angular Specifmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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