The semi-anechoic chamber is a shielding body equipped with absorbing materials on the inner surface in addition to the reflection of the floor as a grounding plate,which is a closed space.The test site of RE102 in the GJB 151B—2013 standard is generally a semi-anechoic chamber,the test frequency range covers 10 kHz～18 GHz,and four antennas are used to cover each frequency band during the test.When the background noise of semi-anechoic chamber RE102 does not meet the test requirements,there may be many influencing factors.By using the test method specified in GJB 151B—2013 standard and combining with test cases in practical laboratory applications,the frequen-cy range of interference signals caused by different influencing factors is analyzed,which provides reference for the laboratory to locate specific noise sources according to specific frequency bands when the background noise does not meet the test requirements.
关键词
半电波暗室/RE102/背景噪声/影响因素/频段
Key words
semi-anechoic chamber/RE102/background noise/influence factor/frequency range
维普
万方数据