Abstract:
This letter presents an effective spherical far-field extrapolation and reconstruction method for antenna measurements. The proposed method firstly uses geometric relatio...Show MoreMetadata
Abstract:
This letter presents an effective spherical far-field extrapolation and reconstruction method for antenna measurements. The proposed method firstly uses geometric relationship to project the spherical near field as the planar near field. Then the planar convolution-deconvolution method is performed to derive the planar far fields under the two tested frequencies. Since the two convoluted far fields have high similarity, the low-frequency far field can be used to interpolate the high-frequency data. Besides, the Gerchberg-Papoulis (GP) iterative method is applied to reduce the truncation error of the interpolated high-frequency far field. Finally, the proposed method can improve the data utilization efficiency of the multi-frequency test, and reduce the spherical sampling number by 66% and save the post-processing time cost by 10% with satisfactory reconstruction accuracy.
Published in: IEEE Antennas and Wireless Propagation Letters ( Early Access )
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