Antenna Calibration Using the 3-Antenna Method with the In-Phase Synthetic Method
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概要
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The use of the in-phase synthetic method is proposed for antenna calibration using the three-antenna method (TAM) in order to make the TAM applicable even in a semi-anechoic chamber (SAC) or on an open-area test site. Suitable antenna arrangements are theoretically investigated for this improved calibration method. Experimental analyses demonstrate that the in-phase synthetic method can remarkably reduce unwanted effects of the ground-reflected wave. Therefore, even on a metal ground plane, the proposed TAM with the in-phase synthetic method can yield an accurate actual gain of a double ridged guide antenna at frequencies from 4GHz to 14GHz with differences of +0.16/−0.37dB from the results of the conventional TAM performed in an fully anechoic room (FAR).
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