Measurement scheme for millimeter-wave electric field based on IQ-mixing technique

Millimeter-wave is one of core technologies in 5G communications system. And the effects of its electromagnetic exposure on people have received a lot of attention. The Specific Absorption Rate (SAR) of electromagnetic wave and Power Density (PD) are important indicators for antenna transmission features in the mobile terminal. These two indicators are closely connected with product safety and necessary testing indexes for wireless communication terminals to enter into the markets. As for the issues mentioned, the article proposed the measurement scheme plan for millimeter-wave electric field based on IQ frequency mixing technique. The superiority of the proposed scheme had been verified in the between 24 GHz and 40 GHz band.