This paper gives the deduction of optically modulated scatterer to measure radiation near-field through reciprocity principle and the structure of the optically modulated scatterer system.

• 给出以互易原理为基础的光调制散射器测量法的理论推导,采用光电二极管光导开关作为散射器中间部分的光调制单元,设计出了实用的光调制散射器微波测量系统。