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Antenna Gain Measurements by an Extended Version of the NBS Extrapolation Method

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3 Author(s)

A General Extrapolation Technique which corrects for the effects of ground reflections in absolute gain measurements is described. It utilizes the Extrapolation Method developed at NBS which, in its present form, utilizes only amplitude versus distance data. However, for broadbeam antennas such as those encountered below 1 GHz, ground reflections may produce unwanted oscillations in the amplitude versus distance data. Hence the data are not amenable to the curve-fitting procedure of the Extrapolation Method. This problem can be overcome by including phase versus distance information to reduce the effects of ground reflections.

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Instrumentation and Measurement, IEEE Transactions on  (Volume:32 ,  Issue: 1 )