Abstract: We present a microwave spectrometer experiment to measure the circular dichroism properties of chiral meta-materials. Using the microwave spectrometer, the circular dichroism properties of chiral meta-materials are measured to find the significant circular dichroism properties. Then using the electromagnetic field simulation software, the surface current is analyzed. With the rectangular horn antenna system with variable frequency, the related properties can be accurately measured in a certain frequency range and the result of microwave spectrometer measurement is validated. The experiment enriches teaching content of microwave spectrometer experimental projects and provides opportunities for undergraduates to contact the frontier of physic researches, which are beneficial to cultivate students＇scientific research capabilities.

Key words: microwave spectrometer, chiral meta-materials, circular dichroism properties