面板位置误差对反射面天线功率方向图的影响机理

Abstract

Abstract:

The errors associated with a segmented reflector limit the electrical performance obtainable with those antennas. In order to determine realistic error budgets for such antennas, approximate expressions for ETM (Error Transformation Matrix) between panel positional errors and aperture phase errors are derived. Base on the ETM, the mechnism of the influence of the panel positial errors on the power pattern of a reflector antenna with 3-ring panels is studied. It is found by comparing simulation with experimental data that the error is less than 10％. Thus the ETM may be applied to antennas with realistic panel schemes for the prediction of electrical performance and panel adjustment.

Key words: reflector antenna, influence mechanism, panel positional error, power pattern, error transformation matrix

CLC Number:

TN820

WANG Wei;LI Peng;SONG Li-wei. Mechanism of the influence of the panel positional error on the power pattern of large reflector antennas[J].J4, 2009, 36(4): 708-713.

References

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Mechanism of the influence of the panel positional error on the power pattern of large reflector antennas

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