混响室场均匀性的FEKO仿真

Field Uniformity Simulation of Reverberation Chamber with FEKO

介绍了混响室的基本原理和主要参数,阐述了混响室场均匀性校准的步骤和场均匀性标准偏差的计算方法。利用FEKO软件对混响室建模,进行最低可用频率处的场均匀性校准的仿真,计算工作区8个位置的电场,得到场标准偏差。仿真结果表明,混响室在200 MHz的场均匀性完全符合标准IEC 61000-4-21的规定,电场均匀性标准偏差小于3.66dB。

The fundamental and the main parameters of reverberation chamber are introduced. Also, the procedure of chamber field uniformity calibration and the calculational method of standard deviation are expounded. Model of the reverberation chamber is created with the software FEKO, and field uniformity simulation is taken. The electric field strength in 8 positions of the workplace is calculated and standard deviation of electric field is calculated. The results present that the performance of the reverberation chamber conforms to the IEC 61000 -4 -21 standard. The standard deviation of field uniformity is less than 3.66 dB.