Design of Antenna with Low Intensity RFID Wireless Network Signal

Testing direction and relative distance nearest to test position of environmental field intensity are analyzed using simulating calculation, taking three-dimensional cube good conductor as general test equipment, under vertical incidence of single plane wave, the effect of electrical size of the test equipment on test point selection is analyzed; incident angle of plane wave is transformed to calculate an relative error between selected position field intensity and environmental field intensity in oblique incidence condition so as to meet the demand of the experiment; and then promote it to reverberation chamber which is distributed as superposed field of multiple columns plane wave, make an analytical calculation on relative error, which can be controlled within 3%, of selected test point to satisfy the experimental requirements, and it can be applied to practical test.