MEASURING APPARATUS AND MEASURING METHOD FOR ELECTROMAGNETIC SHIELD

摘要

PROBLEM TO BE SOLVED: To provide a measuring apparatus and a measuring method for electromagnetic shield, whereby the quantity of electromagnetic shield conforming to an actual use state can be measured and the discontinuity of an electromagnetic shielding performance at a connecting part or the like of an object to be measured can be evaluated.;SOLUTION: An object to be measured is placed on a support (11 in Fig. 3), formed of a material passing through electromagnetic waves such as styrene foam or the like. A transmission antenna (1 in Fig. 3) is set to provide an isolated distance between an actually used shield face and a radiation source. A receiving antenna (2 in Fig. 3) is made movable by an X-Y positioner or the like inside a plane which is nearly parallel to the object to be measured. A two-dimensional electromagnetic field distribution is operated from data, obtained by scanning in two dimensions and displayed as contour lines.;COPYRIGHT: (C)2001,JPO