杭州求真电子科技有限公司
设为首页 | 加入收藏 | 联系我们
首页 公司简介 新闻中心 产品销售 促销活动 技术支持 联系我们
 
红外热成像仪
功率分析仪
电磁兼容测试仪器
- 脉冲群发生器系列
- 静电放电发生器系列
- 雷击浪涌发生器系列
通用测试仪器
安规测试仪器
医疗设备检测仪
振动诊断分析仪
制鞋专用设备
流体力学设备
求真电子
新能源光伏实训设备
物联网实验类产品
食品质量分析设备
电子实训套件
 
 
电波暗室的基本分类和用途有哪些?

电波暗室的基本分类:
Basic classification of the electric wave chamber:
1、半电波暗室与全电波暗室类似,也是一个经过屏蔽设计的六面盒体,在其内部覆盖有电磁波吸波材料,不同之处在于半电波暗室使用导电地板,不覆盖吸波材料。半电波暗室模拟理想的开阔场情况,即场地具有一个无限大的良好的导电地平面。在半电波暗室中,由于地面没有覆盖吸波材料,因此将产生反射路径,这样接收天线接收到的信号将是直射路径和反射路径信号的总和。
1, half electric wave darkroom is similar to all electric wave darkroom. It is also a shield designed six box body, which covers electromagnetic wave absorbing material inside it. The difference lies in the use of conductive floor in the half wave chamber and no absorbing material. The semi anechoic chamber simulate the ideal open field, that is, the site has an infinitely good conductive ground plane. In a half anechoic chamber, the reflection path will be generated because the ground does not cover the absorbing material, so the received antenna will be the sum of the direct and reflection path signals.
2、开阔场(open area test, OAT)典型的开阔场是平坦、空旷、电导率均匀良好、无任何反射物的椭圆形或圆形试验场地,理想的开阔场地面具有良好的导电性,面积无限大,在30MHz~1000MHz之间接收天线接收到的信号将是直射路径和反射路径信号的总和。但在实际应用中,虽然可以获得良好的地面传导率,但是开阔场的面积却是有限的,因此可能造成发射天线与接收天线之间的相位差。在发射测试中,开阔场的使用和半电波暗室相同。
2. The open field (open area test, OAT) is an elliptical or circular field with flat, open, uniform conductivity and no reflection. The ideal open space mask has good conductivity and infinite area. The signal received by the antenna between 30MHz~1000MHz will be the direct path and reflection. The sum of the path signals. However, in practical applications, although the good ground conductivity can be obtained, the area of the open field is limited, so it may cause the phase difference between the transmitting antenna and the receiving antenna. In the launch test, the open field is the same as the half anechoic chamber.
3、 全电波暗室减小了外界电磁波信号对测试信号的干扰,同时电磁波吸波材料可以减小由于墙壁和天花板的反射对测试结果造成的多径效应影响,适用于发射、灵敏度和抗扰度实验。实际使用中,如果屏蔽体的屏蔽效能能够达到80dB~140dB,那么对于外界环境的干扰就可以忽略不计,在全电波暗室中可以模拟自由空间的情况。同其它两种测试场地相比,全电波暗室的地面、天花板和墙壁反射最小、受外界环境干扰最小,并且不受外界天气的影响。它的缺点在于受成本制约,测试空间有限。
3, the full electric wave chamber reduces the interference of the external electromagnetic wave signal to the test signal. At the same time, the electromagnetic wave absorbing material can reduce the effect of the multipath effect caused by the reflection of the wall and ceiling on the test results, and is suitable for the experiments of emission, sensitivity and immunity. In practical use, if the shielding effectiveness of the shield can reach 80dB~140dB, the interference of the external environment can be ignored, and the free space can be simulated in the full electric wave chamber. Compared with the other two testing sites, the ground, ceiling and walls of the whole electric wave chamber have the smallest reflection, minimal interference from the outside environment, and are not affected by the outside weather. Its disadvantage lies in the limited cost and limited testing space.
电波暗室的主要用途:
The main uses of the electric wave chamber:
电波暗室主要用于辐射无线电骚扰(EMI)和辐射敏感度(EMS)测量,电波暗室的尺寸和射频 吸波材料的选用主要由受试设备(EUT)的外行尺寸和测试要求确定,分1m法、3m法或10m法。 根据具体使用要求还可定制各种非标暗室。
The electric wave darkroom is mainly used for radiation radio harassment (EMI) and radiation sensitivity (EMS) measurement. The size of the dark room and the selection of radio frequency absorbing materials are mainly determined by the size and test requirements of the tested equipment (EUT), and are divided into 1m, 3m or 10m. All kinds of non-standard darkroom can be customized according to specific requirements.

************************************************************************************************************************************************************************

杭州求真电子科技有限公司

地    址:杭州市江干区新城广场8F-831室

电    话:0571-86733781

手    机:18958035227

联系人:赖经理

邮    箱:15990027548@126.com

网    址:www.hzqzdzkj.com

***************************************************************************************************************************************************

发布日期:[2018-9-22]  共阅[633]次  〖打印此页〗 返回列表

首页 | 公司简介 | 产品销售 | 促销活动 | 技术支持 | 联系我们 | 后台管理

版权所有:杭州求真电子科技有限公司 技术支持:96互联
济南私家侦探公司威海私家侦探旅游规划变频串联谐振妞仔酷纸尿裤代理配资平台魔法豆豆纸尿裤办证期货配资成都代孕