Search

This paper presents a design method for S-band transmission and X-band absorption rasorber metasurface. This absorption is achieved by loading a lumped element in the metasurface. According to the simulation results, the designed structure has a transmittance of more than 80% in 0 ∼ 2.6 GHz and absorption rate of 80% in 8 ~ 14 GHz, the maximum absorption rate is more than 90% in 9 ∼ 14 GHz, the metasurface will have great application value in the stealth field. And its structure is simple, weight is light and easy to fabricate.

The transmissive metasurface has important applications in many fields. So its design,fabrication and measurement have become a research hotspot in related fields. However, during the measurements in practice, it is usually found that the measured transmittance (T) suffers from abnormal fluctuations in the designed high transmittance frequency band, which are quite different from the simulation results. In this paper, we analysis the main causes of this phenomenon and presents a simple solution — the time domain gate. The results show that the proposed scheme can well solve the fluctuations caused in the measurement.