Comments on "A new method of analysis of the near and far fields of paraboloidal reflectors"

Bach, H.; Narasimhan, M. S.; Christopher, S.

doi:10.1109/tap.1985.1143462

Cited by 4 publications

(2 citation statements)

References 5 publications

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“…Sophisticated methods includes a) GTD (Geometrical Theory of Diffraction) and PTD (Physical Theory of Diffraction) [1,2,3]. However, these techniques can not be used for analysis of feeds for such antennas.…”

Section: Introductionmentioning

confidence: 99%

Analysis of prime-focus reflector antennas by WIPL code

Kolundžija

Sarkar

1996

1996 26th European Microwave Conference

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The paper presents a new method for the analysis of the reflector antennas together with their feeds and supporting structures. The method combines the WIPL code (entiredomain Galerkin method applied to geometrical model made of bilinear surfaces) and specific segmentation techniques, thus enabling efficient analysis of the reflectors the diameter of which is up to D=40k at personal computers. Good agreement with other theoretical and expenrmental results is observed. In addition, results illustrating the influence of feedsupport struts on the radiation pattern are presented.

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Section: Introductionmentioning

confidence: 99%

Analysis of prime-focus reflector antennas by WIPL code

Kolundžija

Sarkar

1996

1996 26th European Microwave Conference

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“…If the advantages of ray optics with respect to accuracy, as mentioned above, are to be exploited within the collimated beam, the SNFGTD method [2][3][4] can be applied. In this method, the GOcaustic is avoided by using GTD [5] to calculate the near field, which is then transformed to the far field using a spherical wave expansion.…”

Section: Introductionmentioning

confidence: 99%

Comparison of three cross-polarisation prediction methods for reflector antennas

Bach

Viskum²

1986

IEE Proc. H Microw. Antennas Propag. UK

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Three analysis methods for reflector antennas, the spherical near-field geometric theory of diffraction (SNFGTD), the moment method (MM) and physical optics (PO) are compared. In the SNFGTD method, the far field from the antenna is found by a spherical near-field transformation (SNF) of the tangential electric near field on a sphere surrounding the antenna once this has been found using the geometrical theory of diffraction (GTD). SNFGTD and MM agree very well, whereas PO differs with respect to the cross-polar pattern. Some discrepancies between SNFGTD and MM are shown to be related to inaccuracies in the GTD diffraction coefficients close to the reflection boundary.

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