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Far-field errors due to random noise in cylindrical near-field measurements

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3 Author(s)
Romeu, J. ; Dept. of Signal Theory & Commun. Polytech. Univ. of Catalonia, Barcelona, Spain ; Jofre, L. ; Cardama, A.

A full characterization of the far-field noise obtained from cylindrical near-field to far-field transformation, for a white Gaussian, space stationary, near-field noise is derived. A possible source for such noise is the receiver additive noise. The noise characterization is done by obtaining the autocorrelation of the far-field noise, which is shown to be easily computed during the transformation process. Even for this simple case, the far-field noise has complex behavior dependent on the measurement probe. Once the statistical properties of the far-field noise are determined, it is possible to compute upper and lower bounds for the antenna radiation pattern for a given probability. These bounds define a strip within the radiation pattern with the desired probability. This may be used as part of a complete near-field error analysis of a particular cylindrical near-field facility

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Antennas and Propagation, IEEE Transactions on  (Volume:40 ,  Issue: 1 )