The fundamental design method of EMC semi anechoic chamber is explaned.An example, the ray-tracing technique is explaned, and the design result of 10m semi anechoic chamber is shown.

• 介绍了半电波暗室的基本设计方法,并举例介绍了射线法技术,给出了10m法半电波暗室的设计结果。