混响室加载布局对测试区域场特性的影响  

Influence of Loading Layout on Field Characteristics in Reverberation Chamber Test Area

作　　者：贾锐[1] 王庆国[1] 刘逸飞[1] 王树峤[1] 

机构地区：[1]军械工程学院静电与电磁防护研究所,石家庄050003

出　　处：《高电压技术》2013年第12期2906-2909,共4页High Voltage Engineering

基　　金：国家自然科学基金(51277180;51107147);国家重点实验室基金(9140C87020211JB34)~~

摘　　要：为了解电子设备加载布局对混响室内场特性的影响,通过实验方式进行了研究。实验设置了3种不同加载布局,分别在200MHz、500MHz与1GHz 3种不同频率下测量了测试区域的场均匀性以及独立采样数。结果表明:不同的加载布局方式会对测试区域场均匀性以及独立采样数产生较大影响。混响室加载后,测试区域内场均匀性会有所提高,但会降低独立采样数。分析指出,利用混响室进行电磁兼容测试时,为了得到较好的场均匀性和较大的独立采样数,不要将受试设备直接放置于测试区域地面上;当受试设备包含多个系统时,需要将多个系统分散放置于实验台上。In order to investigate the influence of loading layout on the field property in reverberation chamber, three different layouts in a reverberation chamber were tested, while the field uniformity character and the number of independent samples were measured under 200 MHz, 500 MHz, and 1 GHz, respectively. The results showed that different layouts had a significant influence on the field uniformity and number of independent samples. When the reverberation chamber was loaded, the field uniformity of the test area was better, but the number of independent samples decreased. Analyses of the test results indicate that, when processing electromagnetic compatibility （EMC） tests, the equipment under test （EUT） should not be set on the floor of the cavity, for a better field uniformity and bigger number of independent samples; when the EUT includes a series of systems, the systems should be set on the experiment table dispersedly.

关 键 词：混响室 加载 电磁场 场均匀性 独立采样数 电磁兼容 

分 类 号：TN06[电子电信—物理电子学]