| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an EMI noise measuring method capable of easily measuring EMI noise in a radio-wave half-anechoic chamber using the radio-wave half-anechoic chamber. <P>SOLUTION: A space propagation loss LR2 is measured in a radio-wave full-anechoic chamber 1, and a space propagation loss LC2 is measured in a radio-wave half-anechoic chamber 11. A logical space propagation loss LR1 is computed in the radio-wave full-anechoic chamber 1, and a logical space propagation loss LC1 is computed in the radio-wave half-anechoic chamber 11. A conversion coefficient A for converting a measured value in the radio-wave full-anechoic chamber 1 into a measured value in the radio-wave half-anechoic chamber 11 is computed using those space propagation losses LR1, LR2, LC1 and LC2. Further, EMI noise of an EUT 21 in the radio-wave full-anechoic chamber 1 is measured. Further, the conversion coefficient A is used to estimate an EMI noise measured value in the radio-wave half-anechoic chamber 11 from an EMI noise measured value in the radio-wave full-anechoic chamber 1. <P>COPYRIGHT: (C)2013,JPO&INPIT |
