悄然出现的IGHz以上高频噪声  

Noise above 1GHz Emerging as an Unexpected Threat

作　　者：宇野麻由子[1] 南庭 

机构地区：[1]<日经电子>

出　　处：《电子设计应用》2009年第10期24-33,共10页Electronic Design & Application World

摘　　要：根据CISPR(国际无线电干扰特别委员会)在2005年颁布的CISPR 22标准,对打印机、复合机、PC等IT设备进行辐射干扰测试时,上限频率将从原先的1GHz提高到6GHz。2010年10月,该标准将率先在欧洲和日本生效,随后逐渐推广到全球各地。今后,对超过1GHz的高频辐射电磁噪声的严格限制还将逐渐扩展到整个电子行业。因此,设备厂商必须做好准备。要想降低1GHz以上的电磁噪声,必须在测量/评估、设计、安装等各个流程中都采取应对措施。High-frequency electromagnetic interference(EMI) radiated by electronic devices,noise above 1GHz,is attracting increased scrutiny in the industry.The reason is that revisions to EMI standards have expanded the scope of regulated frequencies into the GHz waveband.Equipment manufacturers are taking action in the realization that regulations will eventually cover all home electronics.To prevent the noise over 1GHz,manufacturers must address this issue in all process phases,from measurement evaluation and design,to assembly.

关 键 词：GHZ 高频噪声 CISPR 电磁干扰 无线电干扰 WLAN 通信频段 电磁噪声 

分 类 号：TP332[自动化与计算机技术—计算机系统结构] TN03[自动化与计算机技术—计算机科学与技术]