An ultra wide-angle and broad-band magneto-electric dipole like metamaterial absorber (MEDMA) was proposed. The trapezoidal resistance films on the top layer and the upright resistance films in the middle are both equivalent to electric dipoles. The metal back plate together with the resistance films on the top layer are equivalent to magnetic dipoles. The radiation characteristics of magnetic dipole and electric dipole determine that the composite structure can achieve low back radiation effect and equal E-plane and H-plane patterns. According to reciprocity principle, the composite structure will also have a better absorption performance when it is used as an absorber. Simulation results show that the absorption of the MEDMA is more than 90% under TM polarized waves of 3.4–8.0 GHz as the incident angle changes from 0 to 80. For TE polarized waves of 3.2–9.0 GHz, the absorption with the incident angles of 0–50 is more than 80%. The absorption performance for each part of the MEDMA was analyzed by the surface current distributions, and the impedance matching characteristics was demonstrated by Smith chart. This work may provide a technical way in stealth research.

提出了一种超广角宽带磁电偶极子超材料吸收器（MEDMA）。顶层的梯形电阻膜和中间的直立电阻膜都相当于电偶极子。金属背板与顶层的电阻膜一起相当于磁偶极子。磁偶极子和电偶极子的辐射特性决定了复合结构可以实现低背辐射效果和相等的E面和H面图案。根据互易原理，复合结构作为吸波材料也会有更好的吸波性能。仿真结果表明，当入射角从 0 度变为 80 度时，MEDMA 在 3.4-8.0 GHz 的 TM 偏振波下的吸收率超过 90%。对于 3.2-9.0 GHz 的 TE 偏振波，入射角为 0-50 的吸收率超过 80%。通过表面电流分布分析MEDMA各部分的吸收性能，并通过史密斯圆图证明阻抗匹配特性。这项工作可能为隐身研究提供技术途径。