Low frequency absorption method for anechoic HF test chamber

摘要

The method involves placing at least one angled absorbing surface (25,27) along the inner face of each side wall (38,39) of the test chamber. These serve the purpose of trapping and absorbing HF energy from the test position (10) which would otherwise be reflected from the side walls to the measurement position (12). The absorbing surfaces are set up at 90 deg to the direction of the HF energy from the equipment to be tested. A further angled absorbing surface (26,28) is positioned along the inner face of each side wall (38,39) to trap and absorb HF energy from the measurement position which would otherwise be reflected from the side walls to the test position. These absorbing surfaces are set up at 90 deg to the non-reflecting direction of the HF energy