On the accuracy of the distance-averaging method for antenna gain measurements

We have previously proposed an indoor measuring technique for antenna gain, based on averaging a normalized transfer function over a distance range. Simulated and measured results have also been presented, in order to validate the method. In this paper, we assess the accuracy of our method by comparing the results to those issued from a traditional, non-anechoic approach, i.e., the time-gating method, as well as from measurements inside an anechoic chamber. A good agreement between the results issued from the three techniques was noted. Further, it appears that measurements in the intermediate-field region are also possible with the distance averaging method.